SI OPPRESSOR UNI 3-LUG QD BS

Package Contents:-x1 SI OPPRESSOR Universal proprietary 3-lug quick detach base-x1 Shim (only used for 1/2" barrel)-x1 AR crush washer for .223/5.56/9mm (1/2")-x1 AR crush washer for .308/7.62 (5/8")-x1 Warning card-x1 Installation order cardProduct Features:-Additional SI OPPRESSOR Universal proprietary 3-lug QD base-Quickly swap one SI OPPRESSOR body with multiple weapons-Spare/replacement base-Includes all necessary hardware to install on individual barrel-3-lug QD base made from S45C steelCOMPATIBILITY:-Only with SI OPPRESSOR Universal body-1/2" and 5/8" threaded barrels-Muzzle devices with a maximum diameter of 25.00mm (0.98")-Multi-caliber with .223/5.56, .308/7.62 and 9mm-Overall diameter of OPPRESSOR U is 41.00mm (1.61")NOT COMPATIBLE: SI OPPRESSOR & SI OPPRESSOR LITE