CMMG 57DF1C7 PS90 SBR 5.7X28mm 10.4" Black Phosphate None CMMG's PS90 SBR Threaded Barrel Is constructed Of 4150 Chrome Moly Vanadium With Chrome Lining And a maganese Phosphate Coating. It Is 10.4" Long And Is chambered For FN 5.7X28mm Caliber. Caliber Or Gauge: 5.7X28mm Length: 10.4" Model: SBR Tactical Twist: 1:9" Sights: None Finish: Black Phosphate Type: Rifle Barrel Type: Chrome-Lined Chrome Moly Vanadium Barrel Features: M12X1.0 LH
