Gemtech LID Piston 1/2×28 for GM-9 Multimount

This is the threaded piston core (LID piston) for Gemtech GM-9, Multimount 9, or TUNDRA LID units. It provides a U.S. standard pistol thread option of 1/2×28 so a single suppressor system can be adapted to pistols with that thread pattern, and it installs in the field without tools. The LID piston is a serviceable component used to change mounting threads on the LID assembly.

LID body spring and piston block are not included; this listing is for the threaded piston only.

The LID is required for many handguns that use the Browning-style action to ensure reliable cycling when a suppressor is used; this piston provides the specified 1/2×28 interface for compatible host threads.

Key Specifications

• The model is listed as LID.
• The thread size is 1/2×28.
• The product type is classified as a Mount.
• The subcategory is Suppressor Accessories.
• The listed color is Black.
• The listed weight is 0.25.
• The shipping weight is 0.25.
• The NFA thread pattern is 1/2×28.
• An additional feature is Multimount Adapter.
• Compatibility note: NOT COMP w/ TRINITY OR VORTEX.

Compact and purpose-built, this threaded piston core makes it straightforward to convert a TUNDRA or MULTIMOUNT LID to the common 1/2×28 pistol thread. It keeps the conversion simple and serviceable in the field while preserving the intended function of the LID system for pistols that require it. For users who manage multiple host threads or who prefer the 1/2×28 interface, this piston provides a direct, reliable option without extra hardware.