The CMMG 57DF1C7 BBL 5.7X28 10.4" PS90 is the optimal barrel choice for enhancing your PS90 SBR project. This high-performance barrel ensures exceptional accuracy and reliability, making it an essential upgrade for serious firearm enthusiasts. Crafted with precision from 4140 Chrome Moly steel and protected by a Salt Bath Nitride Finish, this barrel combines durability with superior ballistic performance. The 1:9 twist rate and specifically designed 5.7x28 chamber optimize your rifle's effectiveness, while the threaded M12x1.0 LH allows compatibility with various muzzle devices. 10.4" length for compact performance 4140 Chrome Moly construction Salt Bath Nitride finish for enhanced corrosion resistance 1:9 twist rate for stability and accuracy 5.7x28 chamber for improved performance Threaded M12x1.0 LH for versatile muzzle attachment options Transform your PS90 SBR setup with the CMMG 57DF1C7 barrel for unmatched shooting precision.