Gemtech GM-45 Piston Lid | M16x1mm LH

The Gemtech GM-45 piston lid is a rear piston replacement designed for use with GM-45, Lunar-45 and Blackside-45 LID units. It uses an M16x1mm left-hand (LH) thread pattern and is specified for use on HK USP 45 pistols; Gemtech notes it can also be used on some .40 and 9mm pistols. The design supports field installation without tools and is intended as an accessory component for suppressed pistol systems.

Product Specifications

• The NFA thread pattern is 16x1mm LH.
• The product is listed as Accessory-Silencer Accessories in type.
• The item is identified with the UPC 609224345814.
• The package length is 5.8.
• The package width is 3.8.
• The package height is 1.5.
• The reported weight is 0.15.
• The reported shipping weight is 0.15.
• The product includes the feature GM-45/Blackside Piston.
• The product is noted to fit HK USP 45 Pistols.
• The item cannot be disassembled as listed: False.
• The package length/width values as provided are 5.8 and 3.8 respectively.
• The item is marked as able to be dropshipped: True.
• The product is not drilled and tapped: False.
• Scope cover inclusion is listed as: False.

This rear piston lid provides a factory-compatible replacement for GM-45 family LID units where the M16x1mm LH interface is required. It is designed for in-field installation without tools and supports multi-caliber use as indicated by the manufacturer, making it practical for range use and competition setups where quick maintenance or component replacement is needed.