The Gemtech Piston for GM-9/Multimount 9/Tundra LID, 1/2×28 (brand part no. 12169) is an extra LID piston core from Gemtech that changes the thread on a Tundra or Multimount LID. That lets one suppressor serve several host platforms, one thread pitch at a time. The piston installs in the field without tools, and this version carries a 1/2-28 thread pitch. Gemtech lists it for the Lunar 9 and GM-9 LID as well. For shooters who move a suppressor between firearms, a spare piston core is the cheapest way to add a platform.

Key Specifications

• The thread pitch is 1/2-28, the common pitch for 9mm barrels.
• The part is an extra LID piston core, the piece that sets the mounting thread on the LID.
• It fits the Tundra or Multimount LID, and Gemtech lists it for the GM-9 and Lunar 9 LID.
• It lets one suppressor serve multiple platforms by changing the thread on the LID.
• It installs in the field without tools, so a platform swap takes a moment.

Frequently Asked Questions

What does this piston do? It is an extra LID piston core that changes the thread on a Tundra or Multimount LID so one suppressor can fit several platforms.

Do I need tools to install it? No. Gemtech states the piston installs in the field without the use of tools.

What thread pitch is this version? This version is 1/2-28.

Buy the Gemtech Piston for GM-9/Multimount 9/Tundra LID, 1/2×28

A spare piston core is a small purchase that adds a whole host platform to a Gemtech setup. Order it from our Lubbock, Texas gun shop for fast direct shipping, and browse more gun accessories and parts.