The Gemtech M16x1LH piston for the Lunar 45 and GM-45 LID (Gemtech part no. 12191) is the left-hand version of Gemtech’s 16mm LID piston core. Fitting it to a Lunar 45 or GM-45 lets that suppressor mount on a barrel threaded M16x1 left-hand. Gemtech builds these as extra cores so one suppressor can serve more than one pistol without a second can. Left-hand and right-hand 16×1 threads do not interchange, so match the hand to your barrel.

Key Specifications

• The thread is M16x1LH, a left-hand metric pattern that only fits barrels cut the same way.
• It fits the Lunar 45 and GM-45 LID, Gemtech’s .45-caliber suppressors with a swappable piston core.
• The part is an extra LID piston core, designed to change threads on an existing suppressor.
• It is sold separately from the suppressor, which keeps the cost of adding a host low.

Frequently Asked Questions

Which suppressors use this piston? It is made for the Gemtech Lunar 45 and GM-45 LID suppressors.

What is the difference between this and the M16x1RH piston? The thread hand. This piston is M16x1 left-hand, while Gemtech lists a separate M16x1RH piston for right-hand barrels.

Can one suppressor run on several pistols? Yes. Gemtech describes an extra LID piston core as the way to change threads so one GM-45 or Lunar 45 works on multiple host pistols and calibers.

Buy the Gemtech Piston for Lunar 45 and GM-45 LID, M16x1LH

A left-hand 16×1 barrel needs the matching piston, and this is the one Gemtech makes for the Lunar 45 and GM-45. Order it and we will ship it direct from our Lubbock, Texas shop. Browse the rest of our Class 3 parts and accessories.