
Available to order
AIMSPORTS ACWA1 CRUSH WASHER 223 12PK
$11.99
Available to order — ships directly to you, or pick up in store when it arrives
UPC 810097502406MPN 57D88C3

The 5 5.7x28mm Barrel and BCG Kit allows you to build an AR in 5.7x28mm using CMMGs 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. CMMGs 5.7x28mm Barrel and Bolt Kits are designed to be assembled into a mil-spec AR15 Upper and work with either a CMMG Mk57 lower receiver or with a standard Mk4/AR-15 lower receiver (when using CMMG 5.7 AR Conversion Magazines).
Product description as provided for this item, not written by the store.
Specifications for CMMG 57D88C3 BARREL/BCG KIT 8" 57X28MM