A Yankee Hill Machine Victra-20 mount assembly cut for Browning's Invector-Plus choke thread pattern, which is used across Browning and Winchester shotguns. It is the interface that allows a Victra-20 shotgun suppressor to be fitted to those hosts.

With shotguns, the mount is essentially the entire compatibility question, since every manufacturer uses its own choke threads. A properly cut mount ensures the suppressor sits concentric to the bore, which is critical when a wad and full shot column have to pass through it cleanly. Buying host-specific mounts is the standard way to run one suppressor across several shotguns without buying several cans.

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