The Sandman-S features a QD system is design perfection. The Stellite baffles are welded into a solid core for added strength and durability. An innovative 7.62 design first, the front cap is detachable and features an integrated flash hider. This affords better performance, particularly in low light conditions. The detachable front cap also provides some level of insurance should the Sandman-S get dropped or abused. Compatible with 5.7X28MM (FNH), 17HMR, 17 HORNET, 22 HORNET, 5.56 NATO, 22-250 REM, .204 RUGER, .243 WIN, 6.5 CREEDMOOR, 6.8 SPC, 7.62 NATO, 7MM REM MAG, .30-06 SPRINGFIELD, 300 BLACKOUT, .300 WIN , 5.45X39MM. *Note- Barrel must be concentric with bore- 7.62X39MM and 7.62X54R.