Cmmg Bbl 5.7x28 10.4" Ps90

The Cmmg Bbl 5.7x28 10.4" Ps90 is the essential component for enthusiasts and professionals looking to convert their standard carbine into a Short Barreled Rifle (SBR). Designed specifically for the FN PS90 platform, this barrel allows users to restore the firearm to its original intended compact dimensions without sacrificing ballistic integrity or terminal performance. By significantly reducing the overall length of the weapon system, you gain improved maneuverability in tight quarters and vehicle operations, making it a premier choice for tactical training and home defense applications. This barrel represents the gold standard for those who demand the authentic P90 profile and handling characteristics.

Constructed from high-grade 4140 Chrome Moly steel, this barrel features a Salt Bath Nitride finish for exceptional wear resistance and superior corrosion protection even under high-volume fire. The 1:9 twist rate is precisely engineered to stabilize the 5.7x28mm projectile, ensuring consistent accuracy and tight groupings at the distances this platform is designed to dominate. It comes factory threaded in the traditional M12x1.0 LH pattern, specifically requiring a compatible CMMG flash hider or thread adapter to properly secure the muzzle assembly and complete the build. These technical specifications ensure that the barrel can withstand the unique pressures and velocities of the 5.7mm cartridge.

This specialized barrel is a direct replacement part for those who have obtained an approved Form 1 from the ATF for their PS90 SBR project. Installation restores the iconic profile of the P90 submachine gun while maintaining the legendary reliability and cycling performance expected from premium CMMG components. Whether you are a dedicated collector seeking historical accuracy or a professional operator needing a compact Personal Defense Weapon (PDW), this 10.4-inch barrel provides the necessary durability and ballistic precision. It is the definitive solution for upgrading your 5.7x28mm platform to its most effective and compact configuration.