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Rifle Parts Barrel Parts Rifle Barrels CMMG 5" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE Support

Build a Pistol Caliber Carbine with CMMG's MkG Barrel & BCG Kit, featuring Radial Delayed Blowback for reduced recoil and lighter BCG in .45 ACP.

CMMG 5" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE

815835019772 100061549

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Variations
Filters:
Variations:

Variations:

Build a Pistol Caliber Carbine with CMMG's MkG Barrel & BCG Kit, featuring Radial Delayed Blowback for reduced recoil and lighter BCG in .45 ACP.
BARREL AND BOLT CARRIER GROUP KITS 45ACP - 5" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE
449.9 GBP 0 £449.90 *
Not available
Cartridge: 45 Auto (ACP) Contour: MT Finish: Stainless Black Nitride Length: 5'' Make: AR-15 Muzzle Threads: .578-28 Twist: 1-16 Product no.: 100061549
Not available
449.9 GBP 0 £449.90 *
Build a lightweight Pistol Caliber Carbine with the CMMG MkG Barrel & BCG Kit, featuring Radial Delayed Blowback for reduced recoil and compatibility with .45 ACP.
BARREL AND BOLT CARRIER GROUP KITS 45ACP - 8" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE
509.9 GBP 0 £509.90 *
Not available
Cartridge: 45 Auto (ACP) Contour: MT Finish: Stainless Black Nitride Length: 8'' Make: AR-15 Muzzle Threads: .578-28 Twist: 1-16 Product no.: 100061548
Not available
509.9 GBP 0 £509.90 *
449.9 509.9 2 GBP
449.9 GBP £449.90

Prices inclusive of duty & VAT.

Product no.: 100061549

Mfr. No.: 45D69FA

815835019772 The CMMG MkG Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using their Patent Pending Radial Delayed Blowback System. Unlike typical direct blowback systems, the CMMG RDB uses a bolt that is forced to rotate and unlock, slowing the BCG. This results in a lighter BCG for a lighter rifle, and less felt recoil than a straight blowback system. While the CMMG GUARD 45 was designed for .45 ACP, they have tested it, and are proud to say that it is safety rated to fire 450 SMC. The MkG Barrel and Bolt Kits are designed to work exclusively with CMMG’s MkG Lowers, and a mil-spec upper receiver with an enlarged ejection port. Other manufacturers’ receivers may work, but CMMG cannot guarantee function or reliability. Radial Delayed Blowback Bolt (Patent Pending) Requires enlarged ejection port for reliable operation Chambered in .45ACP Available in 5” or 8” lengths Medium Taper Contour .578x28 threads 1-16 Barrel Twist Salt Bath Nitride Finish
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449.9 509.9 2 GBP
Description Specification Customers reviews Accessories

CMMG 5" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE

449.9 GBP £449.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.
Requires order by phone

Description:

Build your ultimate Pistol Caliber Carbine with CMMG's innovative system!

The CMMG MkG Barrel and BCG Kit allows you to construct a Pistol Caliber Carbine utilizing their Patent Pending Radial Delayed Blowback System. This system differs from typical direct blowback systems by employing a bolt that rotates and unlocks, effectively slowing the BCG.

Key Features:

  • Lightweight BCG for a lighter rifle
  • Reduced felt recoil compared to straight blowback systems
  • Safety rated to fire .450 SMC
  • Designed exclusively for CMMG’s MkG Lowers
  • Compatible with mil-spec upper receivers with enlarged ejection ports
  • Radial Delayed Blowback Bolt (Patent Pending)
  • Requires enlarged ejection port for reliable operation
  • Chambered in .45 ACP
  • Available in 5” or 8” lengths
  • Medium Taper Contour
  • .578x28 threads
  • 1-16 Barrel Twist
  • Salt Bath Nitride Finish

While the CMMG GUARD 45 was specifically designed for .45 ACP, extensive testing has confirmed its capability to handle .450 SMC safely. Please note that while other manufacturers’ receivers may be compatible, CMMG cannot guarantee full functionality or reliability.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The CMMG MkG Barrel and BCG Kit features a Radial Delayed Blowback System for reduced recoil and a lighter rifle setup.
  2. Designed for .45 ACP, the kit is also safety rated for 450 SMC and requires a mil-spec upper receiver with an enlarged ejection port.
  3. Available in 5" length with a medium taper contour, the barrel has a .578x28 thread pitch and a 1-16 twist, finished with a salt bath nitride.

Attributes

  • Cartridge: 
    45 Auto (ACP)
  • Contour: 
    MT
  • Finish: 
    Stainless Black Nitride
  • Length: 
    5''
  • Muzzle Threads: 
    .578-28
  • Twist: 
    1-16
  • Weapon type: 
    AR-15
  • Delivery weight: 0.653kg
  • Shipping height: 51mm
  • Shipping width: 64mm
  • Shipping length: 356mm
  • UPC: 815835019772

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (0)

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Variations:

Build a Pistol Caliber Carbine with CMMG's MkG Barrel & BCG Kit, featuring Radial Delayed Blowback for reduced recoil and lighter BCG in .45 ACP.
BARREL AND BOLT CARRIER GROUP KITS 45ACP - 5" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE
449.9 GBP 0 £449.90 *
Not available
Cartridge: 45 Auto (ACP) Contour: MT Finish: Stainless Black Nitride Length: 5'' Make: AR-15 Muzzle Threads: .578-28 Twist: 1-16 Product no.: 100061549
Not available
449.9 GBP 0 £449.90 *
Build a lightweight Pistol Caliber Carbine with the CMMG MkG Barrel & BCG Kit, featuring Radial Delayed Blowback for reduced recoil and compatibility with .45 ACP.
BARREL AND BOLT CARRIER GROUP KITS 45ACP - 8" BARREL & BCG MT 1-16 .578X28 BLACK NITRIDE
509.9 GBP 0 £509.90 *
Not available
Cartridge: 45 Auto (ACP) Contour: MT Finish: Stainless Black Nitride Length: 8'' Make: AR-15 Muzzle Threads: .578-28 Twist: 1-16 Product no.: 100061548
Not available
509.9 GBP 0 £509.90 *

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