Commonly Purchased with Barrel and BCG Kit, 16.1" 4140CM, SBN, 5.7x28mm
Forward Assist Adapter Kit, 22LR AR Conversion
Starting at
$19.95
Magazine, AR15, 350 Legend, 10rd
Starting at
$19.95
Magazine, AR15, 350 Legend, 20rd
Starting at
$24.95
ZEROED Ambi Charging Handle, .22LR
Starting at
$79.95
Magazine, 5.7 AR Conversion, Gen II, 32rd
Starting at
$29.95
Magazine, 5.7 AR Conversion, Gen II, 10rd
Starting at
$29.95
Barrel Sub-Assm, 8" MT 4140CM SBN, 5.7x28mm
Starting at
$274.95
Barrel Sub-Assm, 8" MT 4140CM SBN, 9mm
Starting at
$274.95
Barrel and BCG Kit, 16.1" 4140CM, SBN, 5.7x28mm
The 16.1” 5.7x28mm Barrel and BCG Kit is just the thing for building a carbine length AR 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 without sacrificing key 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).
All CMMG products come with our Lifetime Quality Guarantee.
Specifications
| Caliber | 5.7x28mm |
| Weight | 2.5 lbs |