Product Overview
SKU: CMMG57D0476
Unlock the potential of your AR platform with this high-performance 16.1" 5.7x28mm Barrel and BCG Kit. Engineered for enthusiasts looking to build a compact and potent AR pistol or Short-Barreled Rifle (SBR) in the versatile 5.7x28mm caliber. This kit leverages CMMG's groundbreaking patented Radial Delayed Blowback operating system. Experience a significant advantage over traditional direct blowback systems: Radial Delayed Blowback not only allows for a lighter bolt carrier group (BCG) but also delivers a noticeably smoother shooting experience with reduced felt recoil. Crucially, it retains essential functionalities like last round bolt hold open, ensuring a more efficient and enjoyable shooting session.
Designed for seamless integration, CMMG's 5.7x28mm Barrel and Bolt Kits are built to assemble into a standard Mk4/mil-spec AR15 upper receiver. They are compatible with either a dedicated CMMG Mk57 lower receiver or a standard Mk4/AR15 mil-spec lower receiver, provided you are using CMMG 5.7 AR Conversion Magazines. Elevate your tactical build with this premium component set.
Key Features:
- 16.1" 5.7x28mm Barrel
- 5.7x28mm Bolt Carrier Group (BCG)
- Durable Black Finish
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