YANKEE HILL MACHINE COMPANY VICTRA-20 INVECTOR MOUNT ASSY

Description

The Victra-20 Mount Assembly from Yankee Hill Machine is the starting point for running a suppressor on a 20-gauge shotgun — specifically on barrels threaded for Browning Invector, Mossberg 500, or Winchester choke tubes. Rather than replacing your choke system with a fixed adapter, this mount threads directly into the barrel’s existing choke threads, which means it integrates cleanly without permanent modification. The choke function itself is not handled here; YHM moved that job to a choke cone housed in the front cap of the Victra-20 suppressor, so the mount’s sole responsibility is a solid, correctly indexed connection between barrel and can.

Construction is 17-4 stainless steel finished in Melonite, a surface treatment that builds corrosion resistance and surface hardness without adding meaningful bulk — useful on a shotgun that sees wet field conditions. The mount adds just under an inch to overall barrel length, which matters when you are calculating clearance or legal barrel length before mounting a suppressor. A YHM-1250 Jam Nut is included with every mount to lock the assembly against rotation under the cycling forces a gas-operated or pump-action shotgun generates. Installation uses standard choke tube tools, so no unusual equipment is needed. Each variant in the 1350-series is geometry-specific to a particular manufacturer’s thread pattern, and this variant — YHM-1353A — covers Browning Invector, Mossberg 500, and Winchester platforms. If your shotgun uses a different choke system, YHM offers separate mounts for Remington, Benelli Crio Plus, Beretta Optima HP, Beretta/Benelli Mobil, and Browning Invector Plus.