CMMG 57DF1C7 Barrel Sub-Assembly 5.7x28mm 10.40" Black Nitride Finish 416R Stainless Steel Material Pistol Length with Medium Taper Profile for PS90 SBR
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.
