Bcm lower mk2.

One resides on a BCM lower, other is on a PSA. Honestly the PSA had the better trigger, however both ended up getting replaced with Geissele's. I cannot tell the difference besides the roll marks. Save your $ on the lower and spend the savings on ammo, optic, light, or a better trigger. Posted: 8/2/2020 12:03:37 PM EDT.The BCM AR-15 Complete Lower Receiver is forged and machined from 7075-T6 Aluminum. The receivers are Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 specifications. Features a Staked M4 Lock Nut, USGI H Buffer (1 USGI Tungsten, 2 Steel), Low Shelf for RDIAS installation, and Low Self for Accuwedge use. Fire Controls are marked Safe and Semi.38. Oct 30, 2023. #1. Hello everyone, I recently picked up a BCM MK2 FDE 14.5" upper. I have bigger hands and the BCM handguard is a little thin for me. I was planning on putting an Aero Enhanced Gen 2 Handguard on it, but have read about compatibility issues with the MK2 upper and aftermarket handguards.Rather than sealing the back of the lower, I imagine BCM's intention in the design was to instead relieve the pressure out of the sides, rather than straight back into the shooter's face. I've seen similar pictures of the BCM's MK2 charging handle which appear to cutouts on the top and bottom which likely exaggerates the relief of gases further ...BCM-MK2-RE. Availability: In stock. Delivery time: 3-5 Days. Our BCM MK2 Receiver Extension for your AR15, M16, M4. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Mil-Spec receiver extensions have a slightly smaller dimension where the stock slides on. Hard Coat Anodized per Mil-A-8625F, Type III, Class 2.

Daniel defense are really well made weapons. BCM are mid grade guns. They run, but for the cost there are far better options. Posted: 6/7/2021 12:15:12 PM EDT. [#5] Yep, what others have said. I like BCM, but between the two, DD all day. Posted: 6/7/2021 12:31:30 PM EDT. [#6]BCM® MK2 Standard BLACK 16" Mid Length Complete Upper Receiver Group w/ MCMR-15 FDE Handguard. MSRP: $1,007.39. Your Price: $784.39. In Stock. BCM® MK2 …

The highest quality bolt carrier group from BCM® for your AR15 or M16. Parkerized exterior, chrome lined inside carrier, MPI Bolt assembly ... AR-15 Lower Parts . All AR-15 Lower Parts; AR15 Lower Parts Kits; Tactical Triggers; Trigger Guards; ... BCM. BCM® Mk 12 Complete Upper Receiver Group Mod 1R-Bravo (KAC/RAS) MSRP: $1,686.00 Your Price: ...I have the 14.5 BCM ELW-f with the Gunfighter Mod-1 brake attached, and a 13" KMR rail. I use an Aimpoint T-1 and MagPul MBUS for sighting. A Surefire X300U at 12 0'clock. Instead of the BCM stock, I went with the MagPul MOE SL and a VCAS sling. My lower is a BCM lower with a Geissele SSA trigger.

MCMR-13. Barrel Profile: Enhanced Medium-Weight *FLUTED*. 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 ...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 KITBCM Complete MK2 Lower Receiver Group with BCM MOD 0 Stock (FDE) 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 Steel) BCM Trigger Guard;The BCM AR-15 Complete Lower Receiver is forged and machined from 7075-T6 Aluminum. The receivers are Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 specifications. Features a Staked M4 Lock Nut, USGI H Buffer (1 USGI Tungsten, 2 Steel), Low Shelf for RDIAS installation, and Low Self for Accuwedge use. Fire Controls are marked Safe and Semi.

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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 receivers. LIFESAVING TOOLS

Any insight from someone who may be running this setup would be really appreciated. Edit: we have confirmed that this pair will not fit together. I don’t own either, but looking at the pictures it looks like you shouldn’t have any problems. I think the right side bolt catch can clear the forward assist but hopefully someone who owns this ...BCM M4 Upper Receiver. BCM M4 upper receivers are machined to Mil-Specs from 7075 T6 forgings and equipped with our forward assist assembly and ejection port cover assembly, allowing the end user to upgrade or rebuild their individual components with other Mil-Spec parts in the future.. BCM MK2 Upper Receiver. The BCM MK2 Upper Receiver …The resistance to zero shift was one of the first things I noticed with the BCM Mk2. There was almost no difference when shooting from bipod, monopodding off of the magazine, leaning into ...Their BCM MK2 Receiver Extension for your AR15, M16, M4. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Mil-Spec receiver extensions have a slightly smaller dimension where the stock slides on. Hard Coat Anodized per Mil-A-8625F, Type III, Class 2.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.Jul 5, 2021 · 16in. Barrel Style: BFH. Handguard: MCMR-15. Upper Receiver: MK2. 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 ...

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, and Accessories over $200!BCM Lower with Gunfighter MOD-2 SOPMOD Stock. Your Price: $395.00 Out of Stock. BCM Pistol Lower W/SBA3. Your Price: $475.00 Out of Stock. ... BCM Lower W/ MK2 Recoil Mitigation System Mod 1 - T0. Your Price: $403.00 Out of Stock. More results: 1 2 3 Next Page View All. Gift Certificates; Terms and Conditions;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 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 ...Shop 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. ... Compatibility: Most compatible AR15 style lower receivers Package Includes: Upper receiver group without bcg and charging handle ...

May 5, 2020 ... A range video on my Bravo Company 16 Inch Lightweight AR. What accessories I've added and why, what parts I have changed, how it's held up ...Aero Precision AR15 Complete Lower FDE W/A2 Grip M4 Stock. $314.99 LMT AR-10 Lower MARS-H Stripped . $485.00 Manufacturer. ADM; Aero Precision; Aimpoint; B5 Systems; BCM; Benelli; ... BCM MK2 Standard 14.5" Mid Length (ENHANCED Light Weight) URG w/ MCMR-13 Handguard Pinned MOD3 Comp. Your Price: $845.00

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 ...$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.BCM® Mk 12 Mod 0-Bravo (PRI FDE) Features included in basic price: PRI Gen III 12″ Carbon Fiber Handguard (FLAT DARK EARTH) PRI Folding Front Sight Base. BCM® SS410 18″ Stainless Barrel, Ionbond Black DLC. Rifle Length Gas System. BCM® Bolt Carrier Group (HPT/MPI), auto.The BCM MK2 Mod1 T4 AR15 buffer (7.4oz) is built for the BCM MK2 receiver extension to reduce felt recoil and provide consistent carrier velocity. ... AR-15 Lower Parts. Gunfighting Links American Gunfighter Films Gunfighters. BCM MK2 Buffer Mod 1 - T4 BCM. MSRP: $81.00 Your Price: $72.95 (You save $8.05 ) (No reviews yet) SKU: BCM-BFMK2-M1-T4 ...16in. Barrel Style: Standard. Handguard: MCMR-13. Upper Receiver: MK2. 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 ...BCM Lower Receiver Groups are built to the highest standards. Get yours now at Freedom Trading.THE BCM® MK2 BUFFER. MOD1 - T1, Intermediate Length (BUFFER ONLY) (weight = approximately 4.7oz) Lessens felt recoil, without compromising reliability. Provides a more consistent carrier velocity, which can aid in accuracy, reliability over conventional carbine buffer system. Increased internal counterweight travel reduces bolt bounce.

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SKU. 812526022448. Categories: Rifle Parts Rifle Upper Parts Stripped Uppers. Details. More Information. Reviews. Shipping & Returns. 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 ...

Curious because I am considering building a similar setup and want to know if it wobbles a bunch or not. Like the title says, this is my AR15 with a MK2 BCM upper and a Radian lower. I'm thinking about changing my WML setup. Currently have a Surefire 600DF and I have that lame issue with the low output and flickering.16in. Barrel Style: Standard. Handguard: MCMR-15. Upper Receiver: MK2. 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 …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?BCM Lower Group w/MK2RMS-M1T0 & BCMGUNFIGHTER Stock Mod-1-SOPMOD (Compartment) - Flat Dark Earth - 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 ...Bravo Company Manufacturing RECCE-16 MCMR Precision AR-15 Rifle. View Details. $1,836.00. Out of Stock. Bravo Company Manufacturing RECCE-14 MCMR Lightweight 5.56 AR-15 Rifle. View Details. $1,675.00. Out of Stock. Bravo Company Manufacturing RECCE-16 MCMR 5.56 NATO AR-15 Rifle.Description. Lower Receiver: PWS ambidextrous MK1 MOD 2-M Multi-Caliber Lower T6 7075 Forged Anodized AR-15 Compatible - Trigger: Mil-Spec Enhanced PTFE Coated. - Trigger Pull Weight: 5.5-6.5 lbs. - Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount - Buffer: PWS Enhanced H2 Steel Body ...Key Features VFC AR Series GBBR Improved Lower Receiver Internal Structure & New Firing Pin Design AR Redesign of the internal groove of the AR series GBBR lower receiver. The number of parts of the firing pin parts is less than that of the old version, and it is easier to maintain. ... SKU: VFC-BCM-MK2-2T-145 VFC BCM MK2 MCMR 14.5" V3 Two Tone ...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; 16" Mid Length Upper Group; 16" Recce Upper Groups (Mid Length) 14.5" Mid Length Upper Group; 14.5" M4 Carbine Upper Group; 12.5" Carbine Upper Group; 11.5" Carbine Upper Group; 7", 9 ...

The barrels are MP inspected with both circular and longitudinal magnetic fields per ASTME1444-01 (current Mil-Spec) to assure a high quality finished product. All BCM barrels are marked HP MP as our proof load marking. SKU:BCM-MK2-URG-11-BFH-MCMR-10 Caliber:5.56 NATO Barrel Length:11.5in Barrel Style:BFH Handguard:MCMR-10 Upper Receiver:MK2 ...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. 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 ...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 . ... About the BCM® Mk 12 Complete Upper Receiver Mod 5X-Bravo (MCMR-15) Features included in basic price: BCM® MCMR 15" Handguard; BCM® SS410 18" Stainless Barrel ...Details. 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 Steel) BCM Trigger Guard. BCM PNT Trigger. BCM Gunfighter's Grip, Mod 3. Low Shelf for RDIAS installation.Instagram:https://instagram. pollen forecast houston BCM Lower Group w/MK2RMS-M1T0 & BCMGUNFIGHTER Stock Mod-1-SOPMOD (Compartment) - Flat Dark Earth - 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 ...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 . ... About the BCM® Mk 12 Complete Upper Receiver Mod 5X-Bravo (MCMR-15) Features included in basic price: BCM® MCMR 15" Handguard; BCM® SS410 18" Stainless Barrel ... hoco proposal poster ideas 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-T6 ... helps a thief maybe crossword clue BCM mk2 mcmr 14.5 complete upper, Aero precision complete lower BCM bolt carrier group Radian raptor CH Primary Arms 1x micro prism Streamlight protac 2 on arisaka mount Cloud defense light control system Reply reply [deleted] • Aero Lower + BCM Upper is the way. Reply reply ...BCM AR15 Lower. Comes with everything shown in the above pic (GF MOD3 Grip, BCM PNT FCG, BCM's QD plate, and MOD-2 SOPMOD stock). BCM® Mod 2 SOPMOD tock is an improvement over the baseline M4 accessory with enhanced ergonomics, and next-level durability. SPECS: Machined from Aluminum Forgings 7075-T6. Hardcoat Anodizing: MIL-A-8625F, Type III ... oliviamaebae instagram Their BCM MK2 Receiver Extension for your AR15, M16, M4. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Mil-Spec receiver extensions have a slightly smaller dimension where the stock slides on. Hard Coat Anodized per Mil-A-8625F, Type III, Class 2.BCM Lower Group w/MK2RMS-M1T0 & BCMGUNFIGHTER Stock Mod-1-SOPMOD (Compartment) - Flat Dark Earth - 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 … teldrassil bird meat sod 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 ... Quick View. AR15 Upper Receiver Groups. BCM® MK2 SS410 18″ Rifle Upper Receiver Group w/ MCMR-15 Handguard 1/8 Twist. $ 979.99 $ 792.99. Sale! Quick View. AR15 Upper Receiver Groups. BCM® MK2 BFH 16″ Mid Length (ENHANCED Light Weight) Upper Receiver Group w/ KMR-A15 Handguard. $ 996.55 $ 792.99. tyler white hannibal mo bcm 12.5" upper receiver group qrf-10 no charging handle bcm mk2 14.5 mid length complete upper with fde mcmr-13 bcm bfh 14.5" mid length upper receiver group no charging handle bcm 11.5" enhanced lightweight carbine upper receiver w mcmr handguard no charging handleAZ, USA. Posted: 3/24/2024 6:03:44 PM EDT. Picked up a BCM Mk2 upper with their ambi MK2 charging handle and took it out for the 1st time today. Put about 100 rounds through it mostly suppressed. First-it was extra gassy suppressed with a Sandman S. I figured with their 'fancy' channel like area's around the gas tube and the MK2 charging handle ... wendys commercial cast 12.5in. Barrel Style: Standard. Handguard: KMR-A10. Upper Receiver: MK2. 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 ...About the BCM® Mk 12 Complete Upper Receiver, Mod 4X-Bravo (KMR-A15) Features included in basic price: BCM® KMR Alpha 15" ... Plopped it on a S&W lower I had lying around, added a Magpul fixed MOE rifle stock, a Geissele SD-E trigger, a bipod, and a Vortex Viper PST 2.5-10x32 scope, and was grouping 223 Winchester …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 ... geisinger convenient care wait times Buy BCM® MK2 Receiver Extension Online from our collection of brand new Bravo Firearms for sale. We ship to your desired FFL dealer in the shortest time ... 2.0 MOA Adjustable Red Dot with Lower 1/3 Co-Witness Mount $ 544.00; Aimpoint® ACO (Aimpoint Carbine Optic) $ 399.00; Cart. Description; Reviews (0) BCM® MK2 Receiver Extension.SKU. LRG-STK-MOD-0-BLK. Product Type. AR-15 Complete Lower Receiver. Manufacturer. Bravo Company MFG (BCM) Option. AR-15. BCM 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 BCM Gunfighter Stock Mod … iowa dot road cameras 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: $1,017.39BCM® Mk 12 Mod 0-Bravo (PRI FDE) Features included in basic price: PRI Gen III 12″ Carbon Fiber Handguard (FLAT DARK EARTH) PRI Folding Front Sight Base. BCM® SS410 18″ Stainless Barrel, Ionbond Black DLC. Rifle Length Gas System. BCM® Bolt Carrier Group (HPT/MPI), auto. lippert plants Description. ***COSMETIC BLEM*** (Scratches or scuffs) Packaged in Bulk. Our BCM MK2 Receiver Extension for your AR15, M16, M4. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Mil-Spec receiver extensions have a slightly smaller dimension where the stock slides on. BCM® Stock Mod 2 SOPMOD-Black. Made by Americans in Hartland, WI - the BCM® Mod 2 stock is an improvement over the baseline M4 accessory with enhanced ergonomics, and next-level durability. Recontoured into a patented (United States Patent Number: D901616) semi-clubfoot design, the Mod 2 is fits on Mil-Spec carbine receiver extensions, and ... how many starburst fit in a 32 oz jar 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.)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?In an interview with Jessica Moser of MetLife, Barry Moltz learns that small businesses are more optimistic about their future now than in the Spring. A good reference for how comp...