The Gemtech GM-45/Blackside Thread Mount Adapter, .578×28 (brand part no. 12192) is a threaded end cap adapter from Gemtech for the GM-45 and Blackside suppressors. It lets those suppressors run on fixed-barreled weapons that carry a .578×28 thread. Gemtech lists the same part for the Lunar 45 suppressor as well. If you own one of these suppressors and want to add a host that uses this thread pitch, the adapter is the piece that makes it possible.

Key Specifications

• The thread pattern is .578×28, matching hosts cut to that pitch.
• The part is a threaded end cap adapter, which swaps onto the suppressor’s end to change its mounting thread.
• It is designed for the GM-45 and Blackside suppressors, and Gemtech lists it for the Lunar 45 as well.
• It allows the suppressor to be used on fixed-barreled weapons, as Gemtech describes the part.

Frequently Asked Questions

Which suppressors does this adapter fit? Gemtech lists it for the GM-45 and Blackside suppressors, and the same part is listed for the Lunar 45.

What thread does it use? It is a .578×28 thread mount.

Is there a caliber note to know about? Gemtech notes that the GM-45 and Lunar-45 suppressors are rated for 300 Blackout with subsonic ammunition only.

Buy the Gemtech GM-45/Blackside Thread Mount Adapter, .578×28

The right thread adapter turns one suppressor into a fit for more than one host. Order it from a Lubbock, Texas gun shop for fast direct shipping, and browse more gun accessories and parts.