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Ballistic Specialties Beretta 391 End Cap.  CNC machined from solid stainless bar stock, this end cap’s non corrosive piston prevents seizing.  The end cap is easy to clean and maintin with our end cap maintenance tool. Fits Beretta 391, 12 and 20 gauge shotguns.  

Ballistic Specialties Beretta 391 End Cap Maintenance Tool. Designed for easy maintenance of the Beretta 391 end cap and is a must have tool for keeping your 391 operating.  CNC machined from solid bar stock. This tool makes disassembling and reassembling of the end cap a simple task.

Ballistic Specialties Gas Piston Upgrade Complete Set for Beretta 391.  This Gas Piston is CNC machined from hardened 174-PH stainless solid bar stock.  Includes Gas Piston Bushing and Gas Piston Bushing Snap Ring.

Ballistic Specialities Kinetic End Cap is a direct replacement for the factory endcap, this quality cap weighs 6 ounces and aids in recovery/recoil dampening.  CNC machined from solid aluminum bar stock and anodized with a durable finish.