Bcm lower mk2.

Kit Includes. MK2 Mod 1 - T0 Buffer (weight = approximately 3.8oz) Mil-Spec M16A4 rifle action spring. Mk2 Receiver Extension (approximately 3/4" longer than carbine), 7076T6, 8 position, Mil-Spec diameter. Lock Nut (Castle) M4. Receiver QD End Plate (include mount for QD swivel) Made In United States of America.

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The MK2 buffer also features an internal biasing spring, which ensures that the weights always sit towards the front face of the buffer, reducing noise and providing consistent carrier speed, aiding in more reliable chambering and extraction. The BCM MK2 is a semi-proprietary buffer system. It is not compatible with Mil-Spec Carbine buffers or ...MAC Website & PrimaryArms website link: http://www.militaryarms.orgJoin Patreon and support MAC! http://www.patreon.com/militaryarms MAC Amazon Store: https:...If you use Apple's Notes app, you can lock sensitive photos, videos, documents, and more. Searching for data or photo lockers will lead you to many apps. Some of them are genuinely...We offer a wide range of rifle parts and upgrades that are tested multiple times and will surely increase your experience with your AR-15 firearms. Find, compare, and buy the upgrades you need at Rainier Arms. 93 Items. 1. 2. 3. Show per page. Bravo Company MFG (BCM) Gunfighter AR-15 MCMR Rail - 7". $206.95.

Every autumn, right around now, my inbox starts to fill up with a particular type of e-mail from my friends: requests to edit graduate school essays. Every autumn, right around now...BCM® MK2 Upper Receiver Groups; Cosmetic Blem Upper Groups; 20" Rifle Upper Group; 18" SPR Mk 12 Upper Half; 18" Rifle Upper Group; 16" M4 Carbine Upper Group; ... BCM. BCM Lower 1/3 Cowitness A/T Optic Mount for AIMPOINT MICRO T2. MSRP: $140.00 Your Price: $119.00. In Stock. Quick view Add to Cart. BCM.MK 2 RECEIVER OPTIMIZED The U.S. patents pending BCM Mod 3 Charging Handle now features upper and lower and side exhaust channels to vent gas from the chamber away from the shooter during operation of the weapon. While these channels are optimized for the BCM MK2 Upper receiver, they still provide improved gas diversion on all Mil-Spec upper ...

Additionally, the tolerances in general are "looser" that other lower receivers I have. My personal recommendation would be to get a complete BCM lower with their Mk2 recoil system if you can save up a bit more. Or, the best-fitting lower I have is a Centurion. Aero is usually OK, but haven't been perfect for me.This kit contains all the necessary parts to mount to your Mil-Spec dimension stock assembly to your Mil-Spec lower receiver.-MK2 Mod 1 - T1 Buffer (weight = approximately 4.7oz) ... Why the BCM MK2 is SO GOOD . Related Items: KNIGHTS ARMAMENT CO 7.62 QDC FLASH HIDER SUPPRESSOR MOUNT KIT 5/8-24 KNIGHTS ARMAMENT CO 5.56 M4QD FLASH HIDER KIT

DetailsThe Bravo Company Manufacturing BCMGUNFIGHTER AR-15 Enhanced Lower Parts Kit in FDE provides high-quality lower receiver components for superior reliability and durability. Bravo Company U.S.A. is known for producing professional-grade weaponry, parts, and accessories, and the BCMGUNFIGHTER AR-15 Enhanced Lower Parts Kit is no different. The enhanced lower parts kit features American ...SKU: 18-2M100PM1B. UPC: 811154030245. Lower Receiver: PWS MK1 MOD2-M Multi-Caliber Lower, T6 7075 Forged, Anodized, AR-15 Compatible. Trigger: Mil-Spec Enhanced, PTFE Coated. Trigger Pull Weight: 5.5 - 6.5 pounds. Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount.The Mk2 RMS Lessens felt recoil, without compromising reliability and p rovides a more consistent carrier velocity, which can aid in accuracy and reliability over conventional carbine buffer system. Receiver machined from Forged Aluminum 7075-T6; Hard Coat Anodized ; Staked M4 Lock Nut; BCM Mk2 Recoil Mitigation System with T-0 Buffer (3.8 Oz)BCM® MK2 Upper Receiver Groups; Cosmetic Blem Upper Groups; 20" Rifle Upper Group; 18" SPR Mk 12 Upper Half; 18" Rifle Upper Group; 16" M4 Carbine Upper Group; ... AR-15 Lower Parts . All AR-15 Lower Parts; AR15 Lower Parts Kits; Tactical Triggers; Trigger Guards; AR15 Misc Lower Parts; Stocks and Grips . All Stocks and Grips; Stocks .

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Shit will run hard, it's affordable, it's in stock. BCM is the best bang for buck. URGI is great, but more money for not that much more value. DD rIII is badass too, but costs a lot for what you get. Also, I don't care for the short handguard on the 14.5. Can't make a bad decision, just a matter of preference and budget.

Buy BCM® MK2 Standard 12.5" Carbine Upper Receiver Group w/ KMR-A10 Handguard Online from our collection of brand new Bravo Firearms for sale. We ship to your ... Trijicon MRO-C-2200006: Trijicon MRO™ - 2.0 MOA Adjustable Red Dot with Lower 1/3 Co-Witness Mount $ 544.00; Aimpoint® ACO (Aimpoint Carbine Optic) $ 399.00; Cart. Description;April 15, 2022 By D. Faubion. Think it's hard to improve perfection? BCM did just that by bringing the AR's upper receiver into the modern era. Compared to the standard flat-top receiver, BCM's new MK2 upper features notable advances without increasing weight. How'd they do it?The MK2 Upper Receiver also retains all USGI components in the assembly and works with all USGI bolt carriers, charging handles and barrel assemblies. Forged from 7075T6, the BCM MK2 Upper Receivers retain a form following grain structure which maximizes achievable strength. All of these improvements come without affecting the …LMT is the way to go. As far as upper receivers go, I always build guns with matching receiver sets. So I would recommend an LMT upper receiver and BCM everything else if that’s the route you want to go. I’m just chiming in to help some that may need this info. The MARS-L is not compatible with BCM MK2 upper receivers.Areo lower, bcm 12.5 mk2 upper, geissele trigger, cmc lower parts kit, radian ambi charging handle, radian ambi safety, Ip1 site, SBA3 stock, Trex arms sling. (I know black camo isn't cool but I like it so fuck you. Respectfully of course). A little over $1,100 build not including the site and with some Black Friday shopping and coupon codes.The BCM Mk 2 Charging Handle is designed to vent gas from the chamber away from the shooter during operation of the weapon. It features upper and lower and side exhaust channels that are optimized for the BCM MK2 Upper receiver, but still provide improved gas diversion on all Mil-Spec upper receivers.BCM US Patent #10415907 . This kit contains all the necessary parts to mount to your Mil-Spec dimension stock assembly to your Mil-Spec lower receiver. MK2 Mod 1 - T2 Buffer (weight = approximately 5.6oz) Mil-Spec M16A4 rifle action spring; Mk2 Receiver Extension (approximately 3/4" longer than carbine), 7076T6, 8 position, Mil-Spec diameter

BUILT TO EXCEED. Forged from 7075T6, the BCM MK2 Upper Receivers retain a form following grain structure which maximizes achievable strength, the MK2 Upper Receiver retains all USGI components in assembly and works with all USGI bolt carriers, charging handles and barrel assemblies. MADE IN AMERICA. All BCM components and …BCM Enhanced Trigger Guard; BCM MK2 RMS (Recoil Mitigation System) BCM Lower Receiver Groups Also Feature: Receivers Machined from Aluminum Forgings 7075-T6; Receivers Hardcoat Anodized per MIL-A-8625F, Type III, Class 2; Staked M4 Lock Nut; MK2 Mod 1 - T0 Buffer; Mil-Spec M16A4 rifle action spring;BCM Lower with Gunfighter MOD-2 SOPMOD Stock. ... BCM RECCE-16 MK2 BFH ELW MCMR-15 MK2RMS SOPMOD 2. Your Price: $1,767.00 Out of Stock. BCM RECCE-16 MCMR-15 BFH GOVT ...The BCM10/2 MkII uses voltage mixing across its mix busses; this classic architecture reduces the mix bus gain to be reamplified through the 1272's to line level. This process creates a 'pleasant analogue hue compared to modern, transparent, current mixing and forms part of the BCM's unique sonic character.Including the BCM PNT™ Trigger Assembly, the Mod 3 Pistol Grip and Enhanced Polymer Trigger Guard, the BCM Lower Parts Kit is built from 100% parts machined to Mil-Spec standards with all polymer components available in Black and FDE. Today, the commercial market is flooded with a mash up of inferior imported OEM parts with sloppy dimensions ...About the BCM® MK2 Standard 9" 300 BLACKOUT Complete Upper Receiver w/ QRF-8 Handguard. Continuous taper barrel profile designed for optimal weight, balance, and performance. Barrel profile fluted toward the rear near chamber area - Increases strength and heat dissipation. Tapered barrel profile out front, for easier maneuverability.Picked up a BCM Mk2 upper with their ambi MK2 charging handle and took it out for the 1st time today. ... Would like to find a BCM complete lower with their new heavy buffer system. Attached File. BCM Mk2 Upper-Just Meh. AR-15 » AR Discussions. AR Sponsor: Win a FREE Membership!

The MK2 buffer also features an internal biasing spring, which ensures that the weights always sit towards the front face of the buffer, reducing noise and providing consistent carrier speed, aiding in more reliable chambering and extraction. The BCM MK2 is a semi-proprietary buffer system. It is not compatible with Mil-Spec Carbine buffers or ...I'm going to swap my 16" BCM BHF ELW standard upper for a similar 14.5" upper. Is it worth waiting for the ones with the MK2 uppers to surface? Are the MK2 …

BCM Gunfighter's Grip, Mod 3. Low Shelf for RDIAS installation. Low Shelf for Accuwedge use. Fire Controls marked SAFE and SEMI. Buffer Kit: Lessens felt recoil, without compromising reliability. Provides a more consistent carrier velocity, which can aid in accuracy, reliability over conventional carbine buffer system.That being said, as long as you aren't using a MARS lower, there's no downside to the MK2 upper. I think the biggest upside is potentially less gas-to-face if you're using a suppressor. Even if not, all else being equal, my next BCM upper purchase (pinned 14.5") will be with a MK2 upper. Mainly because of the repositioned forward assist. 3. Reply.$449.00. No reviews yet Write a Review. Pickup and Delivery. Add to Wish List. SKU: 18481. Product Description. Specifications. BCM Lower Receiver Groups are built to the highest standards that includes BCMGUNFIGHTER upgrades like their new Mk2 Recoil Management System, PNT Trigger, Mod 3 Pistol Grip, QD Endplate, and BCMGUNFIGHTER MOD-0 Stock.Featuring BCM's Patent Pending MK2 Upper Receiver. This proprietary design offers enhanced rigidity over the USGI product. The increased rigidity limits barrel deflection which aids in consistency/accuracy. Less flex also reduces premature damage, wear, and failure of bolt lugs from misalignment. A gas expansion chamber is machined above the ...AR-15 Lower Parts . All AR-15 Lower Parts; AR15 Lower Parts Kits; Tactical Triggers; Trigger Guards; AR15 Misc Lower Parts; Stocks and Grips . All Stocks and Grips; Stocks . ... BCM. BCM® MK2 Standard 11.5" Carbine (Enhanced Lightweight *FLUTED*) Complete Upper Receiver Group w/ KMR-A10 Handguard. MSRP: $1,056.99BCM MK2 Standard 16. As a note: BCM barrel components are parkerized separately before assembly. Prior to shipping, all BCM upper receiver groups are test fired for function, laser bore sighted with a Milspec carry handle for sight alignment within Mil-Specs, and then batch samples are test fired for accuracy.BCM ® LOWER RECEIVER. Receiver Machined from Aluminum Forgings 7075-T6, Hardcoat Anodized (per MIL-A-8625F, Type III, Class 2) Low Shelf for RDIAS Installation - Installation of a registered drop-in auto sear allows weapon to fire on full automatic. Low Shelf for Accuwedge use. ... BCM ® Barrel. 18" 410 Stainless Steel Medium Contour Barrel 1 ...16in. Barrel Style: Standard. Handguard: MCMR-15. BCM® Bolt Carrier Group: None BCM® Bolt Carrier Group (MPI) (Auto) (included FREE w/ Upper Receiver Group, Special Limited Time Offer) BCM® Charging Handle: None Ambi MK2 Handle (LARGE) +$89.95 Ambi MK2 Handle (MEDIUM) +$89.95 Asym MK2 Handle (LARGE) +$74.95 Asym MK2 Handle (MEDIUM) +$74.95 ...Milspec Upper/Lower/BCG = $300 A5 Buffer Stuff = $150 Stock = $150 Grip = $20 LPK = $80 PRI Rail = $300 PRI top rail = $150 Rear Sight = $100 CH = $80 Front Sight = $150 Suppressor stuff = $150 Barrel = $300. Retail of all the parts on this bad boy = $1930. And it don't shoot great for sure. Wholesale? $1300 probably. So $1500 markup. Not a ...Been thinking about just getting a BCM complete lower and BCM complete 14.5" p/w upper for a basic carbine setup, possibly home defense and carbine classes so I don't continue beating the snot out of my older Colts. As always, reliability and durability is the overriding factor in the decision. Any reports/opinions on BCM's quality/reliability ...

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AR-15 Lower Parts . All AR-15 Lower Parts; AR15 Lower Parts Kits; Tactical Triggers; Trigger Guards; AR15 Misc Lower Parts; Stocks and Grips . All Stocks and Grips; Stocks . ... BCM. BCM® MK2 Standard 14.5" Mid Length (Enhanced MEDIUM Weight-*FLUTED*) Complete Upper Receiver Group w/ KMR-A13 Handguard. MSRP: $1,017.39

AR-15 Misc Lower Parts. Read More expand_more Read Less expand_less Sort By: Quick view Add to Cart. BCM *Cosmetic Blem* BCM® MK2 Receiver Extension ... BCM. BCM MK2 Recoil Mitigation System - Mod 1 - T2. MSRP: $138.00 Your Price: $123.95. Out Of Stock. Quick view Add to Cart. Carbine Buffer. $11.00.Description. Life Saving Tools. BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings) Built to the correct Mil-Specs. (Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate rifle. Please use a heat gun or hair dryer to warm up threaded bore of receiver if barrel extension is too tight.)The MK2 buffer also features an internal biasing spring, which ensures that the weights always sit towards the front face of the buffer, reducing noise and providing consistent carrier speed, aiding in more reliable chambering and extraction. The BCM MK2 is a semi-proprietary buffer system. It is not compatible with Mil-Spec Carbine buffers or ...BCM Lower Group w/MK2RMS-M1T0 & BCMGUNFIGHTER Stock Mod-1-SOPMOD (Compartment) - Black - Utilizes the BCM MK2 Receiver Extension, MK2 buffer, and rifle M16 action spring. The MK2 receiver extension is approximately 3/4'' longer than the standard 6-position extension.Receivers Machined from Aluminum Forgings 7075-T6 Receivers Hardcoat Anodized ...What was loose? I have a bcm mk2 upper and a m4e1 lower and I haven't felt anything loose. Reply reply [deleted] • He means there was play between the upper and lower receiver. ... Okay, my fitment wasn't terrible with my bcm upper but I did experience the same issues you mentioned with the set screw. I just use the tip of a bullet to pop the ...Shop a large selection of in stock Bravo Company Lower Receivers manufactured by Bravo Company (BCM). Get 50% off now - Click Here FAST, FREE shipping on Ammo, Parts, …This AR-15 lower comes fully assembled and ready to attach to any Mil-Spec complete upper. The receiver is forged from 7075-T6 aluminum and hardcoat anodized black and features an enlarged polymer trigger guard already installed. Additionally, this complete AR lower features a BCM grip, Mod-0 stock, and the MK-2 buffer system.This is a BRAND NEW BCM AR15 Lower. Comes with everything shown in the pic (GF MOD3 Grip, BCM PNT FCG, BCM's QD plate & BCM SOPMOD Stock). This lowers feature their new MK2 Recoil Mitigation System.BCM. Bravo Company USA is a firearms manufacturing company in Hartland, Wisconsin specializing in AR-15, M16, and M4 platforms. BCM rifles are used by Special Ops, Homeland Security, US Border patrol, and every branch of the military. Bravo Company believes in the adage, "If You Wish for Peace, Prepare for War," and they follow through by ...When correctly installed and tuned, the patented* BCM MK2 RMS reduces felt recoil without affecting reliability. The Mk2 RMS smooths out buffer displacement with a BCM hard coat anodized 7075T6 aluminum buffer and the use of an M16A4 rifle spring in an rifle length buffer tube. In action, this consistency means more rounds on target faster than ...AR-15 Lower Parts . All AR-15 Lower Parts; AR15 Lower Parts Kits; Tactical Triggers; Trigger Guards; AR15 Misc Lower Parts; Stocks and Grips . All Stocks and Grips; Stocks . ... BCM. BCM MK2 Recoil Mitigation System - Mod 1 - T2. MSRP: $138.00 Your Price: $123.95. Out Of Stock. Quick view Add to Cart. Carbine Buffer. $11.00.BCM® Enhanced Lower Parts Kit for your AR15 Lower Receiver. This kit includes all the Mil-Spec quality components you have come to expect from BCM, along with some fantastic upgrades to include; BCM PNT Trigger Assembly. BCM Pistol Grip, Mod 3. BCM Enhanced Trigger Guard. In a commercial market flooded with imported and low quality Mil-Spec ...

BCM. Bravo Company USA is a firearms manufacturing company in Hartland, Wisconsin specializing in AR-15, M16, and M4 platforms. BCM rifles are used by Special Ops, Homeland Security, US Border patrol, and every branch of the military. Bravo Company believes in the adage, "If You Wish for Peace, Prepare for War," and they follow through by ...Bravo Company MFG (BCM) AR-15 Enhanced Lower Parts Kit. $119.95. Add to Cart. Add to Wish List Add to Compare. Skip to the end of the images gallery. Skip to the beginning of the images gallery. Details. BCM ® Enhanced Lower Parts Kit for your AR15 Lower Receiver. This kit includes all the Mil-Spec quality components you have come to expect ...BCM Pistol Grip Mod 3. BCM Stock Mod 0. BCM Enhanced Trigger Guard. BCM® Lower Receiver Groups Also Feature: Receivers Machined from Aluminum Forgings 7075-T6. Receivers Hardcoat Anodized per MIL-A-8625F, Type III, Class 2. Staked M4 Lock Nut. USGI H Buffer (1 USGI Tungsten, 2 Steel) Low Shelf for RDIAS installation.BCM Corporation is a global health care marketing and manufacturing organization. We are dedicated to delivering products and services to our customers in the most timely and cost- efficient manner.Instagram:https://instagram. charles barkley worst teammate BCM ® LOWER RECEIVER. Receiver Machined from Aluminum Forgings 7075-T6, Hardcoat Anodized (per MIL-A-8625F, Type III, Class 2) Low Shelf for RDIAS Installation - Installation of a registered drop-in auto sear allows weapon to fire on full automatic. Low Shelf for Accuwedge use. Fire Controls Marked SAFE and SEMI. BCM ® Milspec 7075 … smart local 110 Milspec Upper/Lower/BCG = $300 A5 Buffer Stuff = $150 Stock = $150 Grip = $20 LPK = $80 PRI Rail = $300 PRI top rail = $150 Rear Sight = $100 CH = $80 Front Sight = $150 Suppressor stuff = $150 Barrel = $300. Retail of all the parts on this bad boy = $1930. And it don't shoot great for sure. Wholesale? $1300 probably. So $1500 markup. Not a ... pfaltzgraff tea rose value The first is a BCM lightweight (non-CHF) 14.5" Midlength with a pinned BCM comp, the second is a Daniel Defense lightweight (CHF) 16" midlength with a Ranier Arms XTC comp. ... I mounted each upper on the same lower, which has a SSA-E trigger. I mounted my Leupold VX-R Patrol 3-9X scope, which is mounted in a Larue mount. I used an Atlas Bipod ...Pizza History - Pizza history can be traced as far back as ancient Greece when flat bread was dressed with spices and oils. Learn more about pizza history. Advertisement Italians a... umi buffet houston BCM MK2 8-position receiver extension (buffer tube) machined to Mil-Spec dimensions with a slightly smaller dimension where the stock slides on. ... AR-15 Lower Parts. Gunfighting Links American Gunfighter Films Gunfighters. BCM® MK2 Receiver Extension BCM. MSRP: $55.00 Your Price: $49.95 (You save $5.05 ) (96 reviews) … best car in zomboid Sniper's Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Founded by Frank Galli in 2000, Sniper's Hide has been offering informational videos, podcasts, and other support to its users in one location. Forum Statistics. Threads. 472,979. fish market allentown paregal prince kuhio photos Shop BCM® AR-15 upper receiver parts including our upper receiver assembly, forward assist assembly and ejection port cover assembly. We carry other AR-15 parts including barrels, suppressors, flash hiders, compensators, sights, gas blocks, gas tubes, charging handles, bolt carrier components and more. If you would like to shop complete AR ...Product Type. AR-15 Complete Lower Receiver. Manufacturer. Bravo Company MFG (BCM) Color. Flat Dark Earth. Platform. AR-15. All BCM4 Lower Receiver Groups feature: Machined from Aluminum Forgings 7075-T6 Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2 BCM Milspec 7075-T6 Receiver Extention Staked M4 Lock Nut USGI H Buffer (1 USGI Tungsten, 2 ...The 'T2' is a specific weight. The BCM System is called 'MK2.' There are various weights of various sizes named 'T-0 through whatever.' I've only dabbled with the T2 and T1 weight, both in a 13.9. If you go to BCM's site and look at one of the weights they break down what each one weighs. 407c pressure temperature chart The MK2 Upper Receiver also retains all USGI components in the assembly and works with all USGI bolt carriers, charging handles and barrel assemblies. Forged from 7075T6, the BCM MK2 Upper Receivers retain a form following grain structure which maximizes achievable strength. All of these improvements come without affecting the …MK 2 RECEIVER OPTIMIZED The U.S. patents pending BCM Mod 3 Charging Handle now features upper and lower and side exhaust channels to vent gas from the chamber away from the shooter during operation of the weapon. While these channels are optimized for the BCM MK2 Upper receiver, they still provide improved gas diversion on all Mil-Spec upper ... indoor swap meet in long beach ca MK 2 RECEIVER OPTIMIZED The U.S. patents pending BCM Mod 3 Charging Handle now features upper and lower and side exhaust channels to vent gas from the chamber away from the shooter during operation of the weapon. While these channels are optimized for the BCM MK2 Upper receiver, they still provide improved gas diversion on all Mil-Spec upper ...The BCM® MK2 Ambi Large charging handle (5.56/.223) latches extend past the main body of the charging handle by approximately 1.14 in. ... MK 2 RECEIVER OPTIMIZED The U.S. patents pending BCM Mod 3 Charging Handle now features upper and lower and side exhaust channels to vent gas from the chamber away from the shooter during operation of the ... crawford county in gis 14526. UPC. 812526020932. Manufacturer. Bravo Company. BRAVO COMPANY MFG Lower with Stock Mod 0 Bravo. LRG-STK-MOD BCM Lower w/Stock Mod 0 Multi-Caliber AR Platform Flat Dark Earth Cerakote. Bravo's BMC Lower Receiver Group with Stock has a carbine h buffer type, a BCM Mod 3 pistol grip, and a BCm enhanced trigger guard. Specifications: iowa 511 road report And I think that this feature, more than the extra receiver strength or the gas expansion chamber, is probably the most tangible benefit of the BCM MK2 upper for the average AR-15 buyer (assuming that they don't choose to run a lefty rifle instead, like the ones made by Stag). Posted: 1/2/2020 6:05:27 PM EDT.The BCM now offers complete AR-15 Lower Receivers with Mk2 Recoil Mitigation System (RMS) and their Mod 0 - SOPMOD Stock. Designed to reduce felt recoil, provide a more consistent carrier velocity, and reduce bolt boince. ... Mk2 Receiver Extension (approximately 3/4" longer than carbine), 7076T6, 8 position, Mil-Spec diameter; Lock Nut ...This kit contains all the necessary parts to mount your Mil-Spec dimension stock assembly to your Mil-Spec lower receiver. MK2 Mod 1 - T0 Buffer (weight = approximately 3.8oz) Mil-Spec M16A4 rifle action spring. Mk2 Receiver Extension (approximately 3/4" longer than carbine), 7076T6, 8 position, Mil-Spec diameter. Lock Nut (Castle) M4.