Patent ID: 6990764

Claim:
A locking arrangement for a shotgun choke, wherein said shotgun choke comprises a cylindrical tube having an interior passage sized for passage of projectiles fired by a shotgun and a first external threaded portion at one end for threadingly engaging an internal thread in a shotgun barrel which is spaced inwardly of a muzzle end of the shotgun barrel, said locking arrangement comprising a second external threaded portion on said choke cylindrical tube, which second portion will remain exposed beyond said muzzle end of said shotgun barrel when said choke is fully threaded into engagement with said shotgun barrel, and an internally threaded ring sized to be threadingly carried on an outside of said choke and to engage said second external threaded portion of said choke, such that said ring can be threaded onto said choke until it abuttingly engages said muzzle end of said shotgun barrel.