CMMG 16.1-inch 5.7x28mm Barrel and BCG Kit for AR Pistols and SBRs
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CMMG
CMMG 16.1-inch 5.7x28mm Barrel and BCG Kit for AR Pistols and SBRs
CMMG Barrel and BCG Kit, 5.7X28MM, 16.1 Barrel, Black, Fits AR Rifles 57D0476
The CMMG Part Number 57D0476 is a premium 16.1-inch barrel and bolt carrier group (BCG) kit designed specifically for building AR pistols or short-barreled rifles (SBRs) chambered in 5.7x28mm. Featuring CMMG's innovative Radial Delayed Blowback operating system, this kit offers a significant advantage over traditional direct blowback systems by reducing weight and enhancing shooting comfort. The Radial Delayed Blowback mechanism not only minimizes felt recoil but also maintains essential functions such as last round bolt hold open, ensuring reliable performance with every shot. Built with high-quality materials, the kit is compatible with a standard Mk4 or mil-spec AR15 upper receiver and works seamlessly with either a CMMG Mk57 lower receiver or a standard Mk4/AR15 mil-spec lower when used with CMMG 5.7 AR Conversion Magazines. The black finish provides a sleek, corrosion-resistant surface ideal for both tactical and recreational use. Designed for easy assembly, this kit allows users to customize their firearm to suit their specific needs while maintaining optimal performance and reliability. Whether you're upgrading an existing build or starting fresh, this CMMG kit delivers the precision and innovation necessary for a high-performance 5.7x28mm AR platform.
Features:
- Barrel Length: 16.1 inches for optimal balance and handling
- Caliber: 5.7x28mm designed for high-velocity performance
- Operating System: Radial Delayed Blowback reduces weight and recoil
- Compatibility: Fits standard AR15/Mk4 upper receivers and CMMG Mk57 lower receivers
- Finish: Durable black coating for corrosion resistance and sleek appearance
