Modulus arms jig

Modulus Arms Heavy-Duty AR-15 80% Jig. Thread starter Balthaz; Start date Jul 30, 2016; Forums. The Armory. Firearms Talk . Balthaz Gone In 60 Seconds. Site Supporter. Kalash Klub. Lifetime Supporter. Mar 26, 2015 5,597 28,961 113 Dallas Ga. Zip code 30132 Jul 30, 2016 ...

More Accurate: The Depth Gauge included with every Modulus Arms Jig takes the guess work out of finishing your lower receiver, minimizing the opportunity for mistakes. Professionally Engineered Design: The Modulus Arms Heavy-Duty AR-308/AR-10 Lower Receiver Jig is designed by a team of mechanical engineers with decades of experience and CNC ...80% Lower Jig Replacement Parts; 80% Lower Jig Starter Kits; 80% Lower Jig Tool Kits; Pistol Parts . Glock Parts; Sig Parts; AR Parts & Accessories . AR15 Upper Receivers; AR15 Bolt Carrier Groups; AR15 Lower Receiver Parts; AR15 Pistol Grips; AR15 Stocks; AR15 Muzzle Devices; Magazines; Iron Sights; Optics;Solid carbide 4 inch long, 1/4 inch diameter end mill, custom designed with super short 0.75 in flutes and special geometry for optimal performance with the previous generation Modulus Arms Jig. The end mill is NOT compatible with the Router Jig Extreme™ or any current generation Modulus Arm jig.Modulus Arms black Friday sale Thread starter 7.62x39; Start date Nov 25, 2016; 7.62x39. Joined Apr 21, 2006 Messages 3,074 Likes 436. ... Since then 5D released their original jig which was already better than the Modulus jig and then just recently 5d launched their brand new pro series jig which is so far superior to the Modulus jig that it ...Find the best Parts & Accessories at Modulus Arms! Search. Sign in or Register () close Sign in or Register; 80% Lower Jigs . 80% Lower Jigs; 80% Lower Jig Replacement Parts; ... Modulus Arms | 80% Lower Receivers and 80 Lower Jigs Modulus Arms 1001 Sue Dr STE A2 Kemah, TX 77565The 80% Arms GST-9 Pistol Built Kit I reviewed late last year was easily the best pistol lower build kit I've seen yet. It was window-licker simple and produced a great product. The 80% Arms Multi-Platform Easy Jig is even better.. Image courtesy JWT for thetruthaboutguns.com. The Easy Jig allows the user to turn AR-15, AR-10, and 9mm GLOCK compatible AR platform 80% lower receivers into ...Posted by Modulus Arms on 13th Sep 2021 How To Serialize 80 Lower in California Legal Disclaimer: Please understand that we are not lawyers and the information in this blog article is not presented as legal advice nor should it be construed as such.Modulus Arms Universal 80 Percent Lower Router Jig Extreme. This universal kit works with any AR-related lower, including AR-15, AR-9/45, DPMS-308 and AR-10 style 80 percent lowers. It's designed to be used with a router to perform the milling, with a proprietary one-piece guide pin design to keep the end mill from touching the jig.

MODULUS ARMS JIG REVIEW General gun discussions. Home: My iTrader: Join the NRA: Donate to CGSSA: Sponsors: CGN Google SearchThe serialization requirements on any given lower receivers to be engraved include: Engraving must be etched 0.0003” deep into the receiver surface. Text size must be at least 1/16” height. The make and model type. The city and state of manufacture. The caliber (s) expected to be fired. The first and last name of manufacturer/maker.The patented Easy Jig ® Gen 3 Multiplatform™ replaces the Gen 2 as the world's easiest to use, fully universal, 80% lower jig capable of finishing AR-15, AR-9, AR-45 and DPMS gen 1 pattern .308 80% lower receivers without the need for any additional adapter pieces. The jig converts between AR-15 and .308 by quickly adjusting the rear buffer ...If you find that a Modulus Arms jig is incompatible with your metal 80% AR-15/AR-308 lower, please send both the Modulus Arms Jig and the incompatible lower back to Modulus Arms. Modulus Arms will modify your jig to fit to your lower, and return everything to you at Modulus Arms' expense. If the jig cannot be modified to fit your …The advanced SureFire SFMB-556-1/2-28 muzzle brake, which fits M4 / M16 weapons and variants with 1/2-28 muzzle threads, greatly reduces both recoil impulse and muzzle rise so that the weapon tracks straight back to keep you on target for faster shot-to-shot recovery. Its patented Impulse Diffusion design minimizes side blast and rear-directed ...Welcome to Modulus Arms’ pistol parts. Here you can find the best Glock and Sig Sauer parts to complete your builds with the highest performing and quality parts. Should you require parts we do not currently offer, please do let us know so we can look into supporting your building needs. Read MoreTo make your building experience as simple and smooth as possible, we offer quality 80% lower jig tools in conjunction with 80 lower jigs and 80 lowers that allow you to quickly and reliably finish 80% AR-10, AR-9 and AR-15 lower receivers without fail. Our tooling is high quality American made bits which last the average user from 3-5 80% ...

Choosing The Best Bolt Carrier Group. The AR15 bolt carrier group (BCG) is one of the most important parts of the gun. In one smooth cycle, the AR15 BCG chambers the round, cycles the gun to eject the spent casing, chambers another a …. read more. Posted by Modulus Arms on 1st Feb 2023.Modulus Arms Heavy-Duty Universal AR-15 80% Jig--- Now with STEEL parts! Commercial SalesMil Spec is actually short for Military Specification. This may conjure up ideas of reliability and quality - but it does not necessarily mean that. While it might sound impressive for many newer shooters, it has become a joke amongst other more seasoned shooters. Allow us to explain why we should or shouldn't worry about our AR-15 being ...Our Router Jig Extreme SpeedMill™ was designed by our engineers to help builders self-manufacture with the best and fastest milling results to get that mirror finish inside your 80% lower receiver’s trigger pocket. With a supported endmill, results are faster and cleaner than ever before as total runout has been reduced to near-zero, Modulus Arms is uniquely …Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.If you find that a Modulus Arms jig is incompatible with your metal 80% AR-15/AR-308 lower, please send both the Modulus Arms Jig and the incompatible lower back to Modulus Arms. Modulus Arms will modify your jig to fit to your lower, and return everything to you at Modulus Arms' expense.

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Universal Upgrade 80% AR15/AR10 .308 Lower Receiver Drill Press Jig TiN Coated Drill Bit Kit. $ 66.99. 80 Percent Arms Easy Jig Gen-2 Compatible Premium Upgrade AR-15 Lower Jig "TiN" Drill Bit Kit. $ 29.99. PREMIUM UPGRADE MODULUS ARMS ROUTER JIG EXTREME HIGH PERFORMANCE THERMAL FIT READYMILL COMPATIBLE REPLACEMENT "ZrN" COATED HEAT SHRINK END ...Typically, modern AR-15’s are rifled with a twist rate of 1:9 and M-16’s are cut with 1:7 twist, this means you get a full rotation of the bullet every 9 or 7 inches. This is great for stabilization of your projectile for a straighter and more consistent flight path. The M193 is at the light end of the 5.56 spectrum coming in at 55 grains.Jigs and Tools. Router Jig Showdown! 5D Tactical Jig; 80% Arms Easy Jig gen 1; 80% Arms Easy Jig gen 2; Modulus Arms Jig; Modulus Arms Heavy Duty Jig; Coatings. Anodizing; Spray Finishes; Videos; 80% Lower Reviews. Lower Comparison Chart; Lower Magazine Fit Chart; Aluminum Lowers - Billet. 80% Arms 6061; 80% Arms 7075; M1 Machining 7075; New ...The AR9 is an AR style lower receiver made specifically to shoot 9mm or .40 S&W Glock with Glock style magazines. It shares all the same furniture that an AR-15 does, and is com …. read more. Posted by Modulus Arms on 28th Oct 2022.

Blackhawk manufacturing group has paused production of jigs, both router and drill pending litigation. For right now 5d, modulus, and 80% arms have no jigs coming in since they are just resellers for BMG. 10. Reply. Share. Hairy_Pineapple588. • 1 yr. ago. That's a bummer. 6.Posted by Modulus Arms on 19th Apr 2022 Why You Should Be Training With a .22LR AR15 The past three years of the global logistical infrastructure’s failure has affected every commercial and industrial sector imaginable.Few things I found to ease milling on Modulus jig. Few more thoughts on the milling process.Be sure to watch my video comparing the Modulus and 5D jigs as w...Posted by u/b14ck_ro0ster - No votes and 15 commentsWhther you like iron sights, or optics, find the best sighting solution here, at Modulus Arms. Search. Sign in or Register () close Sign in or Register; 80% Lower Jigs . 80% Lower Jigs; 80% Lower Jig Replacement Parts; 80% Lower Jig Starter Kits; ... Modulus Arms | 80% Lower Receivers and 80 Lower Jigs Modulus Arms 1001 Sue DrModulus Arms jig is used pretty heavily, missing some anodizing in places, missing a screw, and one of the size c collar for the trigger pocket , a+b=c though so that's what I've done to complete and works fine. Comes with everything for AR15/10/9 and there isn't a lower I haven't been able to do. Included is an avid power router, the ...The advanced SureFire SFMB-556-1/2-28 muzzle brake, which fits M4 / M16 weapons and variants with 1/2-28 muzzle threads, greatly reduces both recoil impulse and muzzle rise so that the weapon tracks straight back to keep you on target for faster shot-to-shot recovery. Its patented Impulse Diffusion design minimizes side blast and rear-directed ...The AR15 bolt carrier group (BCG) is one of the most important parts of the gun. In one smooth cycle, the AR15 BCG chambers the round, cycles the gun to eject the spent casing, chambers another a …. read more. Posted by Modulus Arms on 1st Feb 2023.Fast and Easy - The Multiplatform Router Jig PRO by 5D Tactical is the fastest and easiest universal 80% lower jig on the market today, bar none. Incredibly Durable - The first universal 80% lower jig ever to offer all ultra-hardened, heat treated steel wear surfaces. The 1.25 inch thick drill guide is constructed of 100% hardened steel, and ...Universal 80 Lower Jigs. 80 Lower Jigs; 80 Lower Jig Bundles; Tools and Parts; 80 Lower Receivers. AR-15 80% Lower Receiver; AR-308 / AR-10 80% Lowers; Forged 80 Lowers; Billet 80 Lowers; Upper Receivers. Upper Receiver Parts; Parts & Accessories. AR15 Furniture; Magazines; Lower Receiver Parts; Irons & Optics; Other Accessories; BlogsFirearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.Every 80% lower needs a good magazine to feed it, and magazines can frequently make or break a firearm. Even the most reliable of guns can't make up for faulty magazines, and that's why we offer only the highest quality magazines for sale with our lowers.

This reusable multiplatform pistol jig is designed for use with both 80% Arms and Polymer80™ frames. It's ideal for enthusiasts focused on creating several custom builds or those who want a precise drilling experience right from the start. Developed to meet the needs of the 80% community, this jig ensures a reliable drilling process for ...

Modulus Arms is proudly known as the best 80 percent lower and 80% lower jig manufacturer on the market. Come check out our selection of American-made 80 lowers today! All of our products ship FAST.Modulus Arms will honor warranty services, provide technical support, and offer replacement tools and parts for all Easy Jig products. Manufacturing and Sales: While Easy Jigs will continue to be manufactured by 80% Arms, all sales must now be conducted through our independent dealers to comply with the new regulation. We are no longer ...Compatible 5D Tactical High Performance Upgrade For 80% AR15 Lower Receiver Jig Tooling Kit. $ 62.99. Sale. Compatible Upgrade Easy Jig Gen 1, Modulus Arms, AR15 & AR10 Lower Receiver Jig Tooling Kit. $ 51.99. $ 57.99. 2 Pack 5/16" 3 Flute, "ZrN" Coated Carbide End Mills Compatible with Easy Jig Gen 2, 5d Tactical Jigs. $ 88.99.This is a used Modulus Arms AR15 Jig. It is as pictured with issues circled. Issue #1 Had a drill bit break and chip the top of the hole in the dog bone shaped piece. Does NOT effect function. Issue #2 Let a friend use the jig and he removed the router while still spinning and hogged out the hole or the trigger slot.happy memorial day! enjoy 10% off sitewide automatically applies to cart. free shipping for orders over $400Overall Value. * $249.99 - Easy Jig Gen2. * $314.98 - 5D Tactical AR-15 (Steel) $199.99 + $114.99 (AR-308 to AR-15 Conversion Kit) *MSRP pricing & excludes promotional bundles and/or sales. I've also excluded the pricing for the Aluminum version of the 5D jig because steel will be more expensive than aluminum.1. 80% Arms Easy Jig 3. Hands down the best 80% jig we’ve used is the Easy Jig 3. 80 Percent Arms Easy Jig Gen 3 is waaay easy. We’ve also completed our Full Review of the Easy Jig with a corresponding video as well: We got the multicaliber version which can easily make the AR-15, AR-45 and AR-9 platforms.Here is a comparison of the top plate dimensions of the 80% Arms Easy Jig and both Modulus Arms jigs. Top plate dimensions: 80% Arms Easy Jig gen2 - 7.5 x 6.125 x 3/16. Modulus Arms original jig - 7 3/16 x 2.5 x 1/4. Modulus Arms heavy duty jig - 8 5/16 x 4 7/16 x 15/16. Third, the elimination of all of the seemingly endless need to assemble ...Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear.

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Modulus Arms Heavy-Duty Universal AR-15 80% Lower Receiver Jig $199.99. Modulus Arms Universal Heavy-Duty AR-308/AR-10 80% Lower Receiver Jig $219.99. Modulus Arms has the fastest, most accurate, easiest and most durable Jigs available. Only our Jigs come with the Universal Compatibility Guarantee. sigpic. ModulusArms.Modulus Arms will honor warranty services, provide technical support, and offer replacement tools and parts for all Easy Jig products. Manufacturing and Sales: While Easy Jigs will continue to be manufactured by 80% Arms, all sales must now be conducted through our independent dealers to comply with the new regulation.ATLANTA, Feb. 28, 2020 /PRNewswire-PRWeb/ -- Jason Colleran, Founder of The Perfect Arm company, will be launching his first campaign this spring ... ATLANTA, Feb. 28, 2020 /PRNews...80% Lower Jigs; 80% Lower Jig Replacement Parts; 80% Lower Jig Starter Kits; 80% Lower Jig Tool Kits; Pistol Parts . Glock Parts; Sig Parts; AR Parts & Accessories . AR15 Upper Receivers; AR15 Bolt Carrier Groups; AR15 Lower Receiver Parts; AR15 Pistol Grips; AR15 Stocks; AR15 Muzzle Devices; Magazines; Iron Sights; Optics;The Robotic Arm - The robotic arm is one of the key developments in industrial robotics. Learn about the robotic arm, its technology and how robotic arms serve heavy industry. Adve...This is a premium replacement end mill for the Router Jig Extreme SpeedMill. It you are milling multiple lowers it is advisable to keep an extra on hand. You can quickly swap the end mill out by heating the SpeedMill™ up with a torch or induction heater. The premium Gen 3 replacement SpeedMill™ features our SpeedCoat™ proprietary coating.The AR9 is an AR style lower receiver made specifically to shoot 9mm or .40 S&W Glock with Glock style magazines. It shares all the same furniture that an AR-15 does, and is com …. read more. Posted by Modulus Arms on 28th Oct 2022.These red dot optics or "reflex" optics on an AR-15 are very fast as well with target acquisition - a necessity for close quarters. Iron sights are, in essence, what you will find on most pistols. Speaking of iron sights, many shooters prefer to run flip up iron sights, front and rear. The reason for this is very simple: if a battery dies ...Fast and Easy - The Multiplatform Router Jig PRO by 5D Tactical is the fastest and easiest universal 80% lower jig on the market today, bar none.; Incredibly Durable - The first universal 80% lower jig ever to offer all ultra-hardened, heat treated steel wear surfaces. The 1.25 inch thick drill guide is constructed of 100% hardened steel, and the side plates house 1.5 inch ultra-hardened steel ... ….

We have received countless questions about what router should be used to finish an 80% lower receiver with their Modulus Arms Heavy-Duty AR-15 Jig, Standard AR-15 Jig, and our AR-308 / AR-10 Jig. We have compiled a list of routers we recommend and do not recommend and why. We have used all of these routers and determined the following.The Modulus Arms jig uses a long screw through the rear takedown hole and recommends assembling the front pivot pin to secure the front of the receiver (I purchased a cotterless hitch pin for my jig). The Easy Jig gen2, Modulus Arms and original 5D Tactical jigs use a long, full thread screw to stiffen the side plates. The 5D Tactical Pro jig ...Posted by Modulus Arms on 10th May 2022 It might seem like a simple question - fixed or folding AR-15 sights on your rifle? The reality is, however, it is not a simple decision to make.EP Armory 80% AR-15 lower receiver. Works with the Modulus Arms Jig - yes. The second generation EP Armory 80% lower polymer receiver addresses several issues the first generation had. Most importantly it no longer has the dual color plastic which was a guide for users not using a jig but was also the cause of an ATF raid when it was decided ...2756 Aiello Drive San Jose, CA 95111 Mon-Fri 9am-5pm [email protected] Phone: (408) 753-1112Over the past five years, China's foreign weapons sales have more than doubled. Just as in other, less lethal industries, the world’s arms exporters are taking market share from th...To make your building experience as simple and smooth as possible, we offer quality 80% lower jig tools in conjunction with 80 lower jigs and 80 lowers that allow you to quickly and reliably finish 80% AR-10, AR-9 and AR-15 lower receivers without fail. Our tooling is high quality American made bits which last the average user from 3-5 80% ...Compatible High Performance Modulus Arms Extreme Jig "TiN"Coated High Speed Steel Drill Bit Combo. $ 26.99. Quantity. Add to Cart. Description. Reviews. Kit Includes: 5/32", 21/64" and 3/8" "TiN" coated high speed steel drill bits. AGT's "TiN' coated ( Titanium Nitride ) high speed steel drill bits were specifically designed for drilling # 6061 ... Modulus arms jig, Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., Modulus Arms is proudly known as the best 80 percent lower and 80% lower jig manufacturer on the market. Come check out our selection of American-made 80 lowers today! All of our products ship FAST., Modulus Arms offers only separate jig systems so you would have to buy a complete AR-10 jig apart from their AR-15 jig. This would cost another $220 for a total of $390. The original 5D Tactical jig system can convert from the AR-15 to the AR-308 with their conversion kit., The patented Easy Jig ® Gen 3 Multiplatform™ replaces the Gen 2 as the world's easiest to use, fully universal, 80% lower jig capable of finishing AR-15, AR-9, AR-45 and DPMS gen 1 pattern .308 80% lower receivers without the need for any additional adapter pieces. The jig converts between AR-15 and .308 by quickly adjusting the rear buffer ..., Safer and Faster: The Modulus Arms AR-15 Jig accommodates the use of a router, for safer and faster machining, limiting the use of traditional handheld drills to remove material. More Accurate: The drill bit depth gauges included with every Modulus Arms AR-15 Jig take the guess work out of drilling into your lower receiver, minimizing the ..., Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., Firearms are and have always been in a constant state of evolution. Much like every other form of technology on the planet, firearms continue to change and on existing platforms to mee the end use …. read more. Posted by Modulus Arms on 15th Jul 2022., Modulus Arms is proudly known as the best 80 percent lower and 80% lower jig manufacturer on the market. Come check out our selection of American-made 80 lowers today! All of our products ship FAST., Find the best Parts & Accessories at Modulus Arms! Search. Sign in or Register () close Sign in or Register; 80% Lower Jigs . 80% Lower Jigs; 80% Lower Jig Replacement Parts; ... Modulus Arms | 80% Lower Receivers and 80 Lower Jigs Modulus Arms 1001 Sue Dr STE A2 Kemah, TX 77565, This leaves your options open to 14.5" barrels or even 13.9" AR 15 barrels provided that you attach a muzzle device to the barrel as how ATF defines permanent and creates an overall barrel length of 16" or longer: full-fusion gas or electric steel-seam welding, high-temperature (1100°F) silver soldering., AR-15 Mil-Spec lower receiver parts kit comes complete with an A2-style pistol grip and Mil-Spec trigger guard kit. Our kit meets the highest quality standards in the industry and is made in America. Featuring ground and polished surfaces, it comes with everything you need to start your custom build, from start to finish., Safer and Faster: The Modulus Arms Heavy-Duty AR-15 Jig accommodates the use of a router, for safer and faster machining, limiting the use of traditional handheld drills to remove material. More Accurate: The Depth Gauge included with every Modulus Arms AR-15 Jig takes the guess work out of finishing your lower receiver, minimizing the ..., The latest jig from 80% Arms, the Gen 3, definitely enhances the original design and offers so much more in the way of useability. Easy Jig Gen 2, left, vs Gen 3, right. To be honest, it blows the Gen 2 out of the water. Like its predecessor, the Gen 3 ships with directions and all the drill bits you need to mill out that lower., Best Revolvers 2022 Edition. The mighty wheel gun. The thought of a revolver might invoke memories of Dirty Harry’s Smith and Wesson Model 29 .44 Magnum, or perhaps John Wayne carrying Samuel Colt’s “Gun That Won the West” - …. read more. Posted by Modulus Arms on 23rd Nov 2022., Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., More Accurate: The Depth Gauge included with every Modulus Arms AR-15 Jig takes the guess work out of finishing your lower receiver, minimizing the opportunity for mistakes. Professionally Engineered Design: The Modulus Arms Heavy-Duty AR-15 Lower Receiver Jig is designed by a team of mechanical engineers with decades of experience and CNC ..., Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., More Accurate: The Depth Gauge included with every Modulus Arms AR-15 Jig takes the guess work out of finishing your lower receiver, minimizing the opportunity for mistakes. Professionally Engineered Design: The Modulus Arms Heavy-Duty AR-15 Lower Receiver Jig is designed by a team of mechanical engineers with decades of experience and CNC ..., Posted by Modulus Arms on 6th Oct 2021 .300 Blackout is an intermediate caliber that performs with a better ballistic capability than 5.56x45mm while retaining the same round capacity using a standard M4 magazine., Build Your New AR with Modulus Arms. Whether or not you're sold on monolithic uppers, our Router Jig Extreme can help you mill out a lower receiver of any caliber suitable for every AR build you have in mind. Check out our selection of 80 percent lowers to start your build soon., One of the greatest things about AR style rifles is its versatility. It can be made to do everything from an accurate medium-range hunting rifle, to a compact, high-speed, low-drag, hard-hitting ho …. read more. Posted by Modulus Arms on 21st Sep 2021., Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear., Modulus Arms is proudly known as the best 80 percent lower and 80% lower jig manufacturer on the market. Come check out our selection of American-made 80 lowers today! All of our products ship FAST., Simply put the M-Lok Rail System is an attachment system that allows the user to add different accessories to their AR-15 rifle or pistol. Nearly every accessory you can think of can be attached via M-Lok to the handguard of the firearm, including but not limited to; Foregrips, tactical flashlights, laser/IR systems, pressure pads etc., See full list on modulusarms.com, Posted by Modulus Arms on 13th Oct 2021 Hunting Deer With 300 Blackout Designed for SOCOM operations in mind, the .300 Blackout has gained widespread recognition and usage that is driving it ever closer to being a staple caliber for the AR-15., It's the spooky season. You're in a horror movie. The jock archetype just told everyone to split up after the creepy house's entrance just closed and locked seemingly by itself., 5d. Gen3 80 percent arms jig is fool proof, not sure about the 5d but it looks identical. Juggernaut Ultimate jig under $200. You can 3d print a jig if you're really hard up for cash. does modulusarma sells the 80% easy jig or they stoped like every body else., Magpul MOE AR Grip. $19.90 $21.99. Need furniture for your new AR-15? Dress it up with some high quality accessories!, Due to high order volumes, please expect a 1 week shipping delay for all orders. Thank you for your understanding., You can reach me directly at [email protected]. Modulus Arms Heavy-Duty Universal AR-15 80% Lower Receiver Jig $199.99. Modulus Arms Universal Heavy-Duty AR-308/AR-10 80% Lower Receiver Jig $219.99. Modulus Arms has the fastest, most accurate, easiest and most durable Jigs available. Only our Jigs come with the Universal Compatibility ..., Modulus Arms products may be returned within 30 days for a refund as long as they are in unused condition. Products which are not made by Modulus Arms such as magazines, lower parts kits, etc. are all returnable within 7 days as long as the original packaging is unopened. Router Jig Extreme™ Satisfaction Guarantee Policy:, Jan 1, 2016 · The second generation Modulus Arms Heavy Duty jig is a leaps and bound improvement over their original jig. While the original jig works perfectly well, and is as universal as the new jig, this version solves the usability issues that I believe the first one had. First, the jig is much, much more substantial in weight and material.