Designed to protect the exterior threads and taper of your .9"-24 muzzle devices while a silencer is not in use. Compatible with all LPM, Rearden MFG, and Q LLC muzzle devices. 
17-4 H900 Stainless Steel
Heat Treated Straw or Black Nitride finish
.25 Ounces
15/16" and 7/8" Hex features for secure mounting