CMMG 16.1" 5.7 Conversion Barrel & BCG Kit 5.7X28MM Rifle Ki

Description

CMMG 16.1" 5.7 Conversion Barrel & BCG Kit 5.7X28MM Rifle Kit AR15 AR-15 PDW CQB Mk57 AR57

The 16.1" 5.7x28mm Barrel and BCG Kit is perfect for building an AR rifle upper in 5.7x28mm using CMMG's patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your BCG but it results in less felt recoil than a straight blowback system and still provides essential features like last round bolt hold open. CMMG's 5.7x28mm Barrel and Bolt Kits are designed to be assembled into a Mk4/mil-spec AR15 upper and work with either a CMMG Mk57 lower receiver or Mk4/AR15 mil-spec lower receiver (when using CMMG 5.7 AR Conversion Magazines).

Includes:

CMMG 16.1” 1:9 Twist, Medium Taper 4140 SBN
CMMG 5.7 BCG INCLUDED

16.1" 5.7mm Rifle Length Barrel Features:

Chamber: 5.7mm
Length: 16.1"
Twist: 1 in 9
Threading: 1/2"x28
Material: Chrome Moly Vanadium
Finish: QPQ corrosion resistant finish both inside and out
Gas System: Delayed Blowback
M4 Barrel Extension

Optional ADD-ON:

32 Round Mag

CMMG’s GEN2 5.7 AR Conversion Magazine holds 32 rounds of 5.7x28mm and fits in any standard AR15 lower receiver. To use, simply attach a CMMG 5.7x28mm Radial Delayed Blowback complete upper receiver to an existing AR15 lower. Then, insert CMMG’s 5.7 AR Conversion Magazine to safely feed 5.7x28mm ammunition. CMMG recommends using a standard carbine buffer and action spring to reliably cycle the action in this configuration. The 5.7 AR Conversion Magazine also retains last round bolt hold-open functionality, allowing for faster reloads.

CALIBER: 5.7x28mm

CAPACITY: 32 rounds

WEIGHT: 8oz(unloaded)

CMMG 16.1" 5.7 Conversion Barrel & BCG Kit 5.7X28MM Rifle Kit AR15 AR-15 PDW CQB Mk57 AR57

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CMMG 16.1" 5.7 Conversion Barrel & BCG Kit 5.7X28MM Rifle Kit AR15 AR-15 PDW CQB Mk57 AR57

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