Patent ID: 8701326

Claim:
An interchangeable barrel system for a pistol comprising: an elongated barrel insert including a rear portion defining a chamber configured for holding a cartridge, and a forward muzzle portion having a bore defining a longitudinal axis and bullet pathway; an elongated receiver fixedly mounted to a grip frame, the receiver remaining stationary during firing of the pistol, the receiver defining an internal cavity configured for axial insertion of the forward muzzle portion of the barrel insert into the receiver; an anti-rotation device configured for preventing rotation of the barrel insert with respect to the receiver; a locking member configured for releasably engaging the barrel insert to secure the barrel insert to the receiver, wherein locking member includes a forwardly protruding threaded extension for attaching an accessory; and a finishing cap configured for mounting on the threaded extension and a spring lock washer disposed between the finishing cap and locking member; wherein the barrel insert includes a threaded locking ring disposed on the forward muzzle portion of the barrel insert that is configured to engage a complementary configured internally-threaded portion of the locking member to releasably secure the barrel insert in the receiver.