b'REVOLUTION45*CAM-LOK Piston IncludedLENGTH.7.6 Full 6.2 Short LENGTH.8.2 DB REDUCT.33dB Dry .45 ACPWEIGHT.10oz MATERIAL.7075 Al & H900 17-4SS WEIGHT.14.5oz MATERIAL.7075 Al & H900 17-4SSDIAMETER1.375 MSRP$795 DIAMETER1.375 MSRP$849CALIBER9mm RATED FOR.Pistol Calibers, 300BLK, 7.62x39,CALIBER.45CAL RATED FOR.Pistol Calibers, 300BLK, 7.62x39, 6.8spc and .308 6.8spc and .308 be interchanged for smaller calibers with 9mm and 22 caliber front caps, available separately. 17-4 stainless heat treated ECO-FLOW baffles ensure maximum strength and sound performance. 7075-T6 Aluminum tubes provide class leading strength capable of supporting rifle calibers for hunting applications.'