Gemtech | GM-45 Rear Piston Lid M16 | M16x1mm RH

The Gemtech GM-45 rear piston lid provides the interface for GM-45-series suppressor pistons and secures via an M16x1mm RH thread. It is intended for use with Gemtech GM-45, Lunar-45 and Blackside-45 piston systems and lists compatibility with HK Mk 23 pistols. The manufacturer also notes it can be used on 40 caliber and 9mm pistols. This field-serviceable component supports installation and maintenance of compatible suppressor assemblies.

Applications: assembly and maintenance of GM-45-series suppressor pistons, and range use with compatible pistols such as the HK Mk 23.

Product Specifications

• The thread size is M16x1mm RH.
• Compatible piston systems are listed as GM-45, Lunar-45, and Blackside-45.
• The product is noted to fit HK Mk 23 pistols.
• The manufacturer states it can also be used on 40 caliber and 9mm pistols.
• The length is 5.7 (unit not specified by the manufacturer).
• The width is 3.8 (unit not specified by the manufacturer).
• The height is 1.5 (unit not specified by the manufacturer).
• The weight is listed as 0.16 (unit not specified by the manufacturer).
• The product type is Accessory-Silencer Accessories.
• Manufacturer indicates the product can be disassembled: False.
• Manufacturer indicates drilled and tapped: False.
• The UPC is 609224345845.

This rear piston lid is a straightforward replacement or spare part for users who maintain GM-45-series suppressor assemblies. Its M16x1mm RH thread and stated compatibility make it a practical choice for armory maintenance and range preparation where matching piston components are required.