Locating collar for M4 spec barrels and ops inc 12th model'” AEM5 and OCM5. Made from H900 heat treated 17-4 steel with a black nitride finish.
Otter Creek Labs M4 Locating Collar, For Use with M4 Spec Barrels with Ops Inc 12th Model, AEM5 and OCM5 Suppressors, Nitride Finish, Black OCL-201
