Gemtech GM-9 Threaded Rear Mount Adapter | 1/2-28

The Gemtech threaded rear mount adapter provides a fixed-thread interface for GM-9 and MULTIMOUNT suppressors when paired with fixed-barrel carbines and submachine guns. It uses a 1/2-28 NFA thread pattern to establish a secure connection between the suppressor and the host firearm. Note that most handguns require the use of Gemtech’s LID mount for proper function.

This adapter is intended for dedicated mounts on compatible platforms and is not a universal quick-detach solution.

Product Specifications

• The brand is Gemtech.
• The manufacturer’s part number is 12172.
• The product description is a Threaded Rear Mount Adapter.
• The fit/thread size is 1/2×28.
• The adapter is designed for use with GM-9 and MULTIMOUNT suppressors on fixed-barrel carbines and SMGs.
• The color/finish is Black.
• The product type is listed as Mount.
• The subcategory is Suppressor Accessories.
• The NFA thread pattern is 1/2×28.
• The listed weight is 0.2.
• Can be disassembled is listed as False.
• Drilled and tapped is listed as False.
• An additional feature is For Fixed BBL Carbines & SMGs.
• Another feature is Multimount Adapter.
• The UPC is 609728889210.

Built to provide a simple, fixed-thread mounting solution, this adapter is a compact, purpose-made part for integrating Gemtech GM-9 and MULTIMOUNT suppressors with compatible fixed-barrel platforms. Its straightforward design keeps installation and maintenance minimal while preserving the suppressor’s intended alignment and function.