Gemtech 12205 SIG & GSG Adapter, M9x.75 to 1-2x28

GEMTECH again makes the pieces fit: the Adapter will allow you to mount most any suppressor or muzzle accessory using 1/2-28 U.S. standard threading onto the SIG SAUER or German Sport Guns .22lr 1911 handguns. The GEMTECH .22 1911 adapter is precision made to ensure alignment to avoid dangerous baffle strikes.

Includes a knurled thread protector for when you aren't using your suppressor.