Gemtech GM-45 Rear Piston Lid M16x1mm LH

Description

The Gemtech GM-45 rear piston lid provides a threaded rear piston interface for the GM-45, Lunar-45 and Blackside-45 LID family. It uses an M16x1mm LH thread pattern and is listed as compatible with HK USP 45 pistols. According to the product information, it can also be used on 40 caliber and 9mm pistols and can be installed in the field without the use of tools.

Key Specifications

• The product is designed for GM-45, Lunar-45 and Blackside-45 LID.
• The NFA thread pattern is 16x1mm LH.
• Compatibility includes Fits HK USP 45 Pistols.
• Can also be used on 40 caliber and 9mm pistols.
• The package length is 5.8.
• The package width is 3.8.
• The package height is 1.5.
• The product weight is 0.15.
• The shipping weight is 0.15.
• Can be disassembled: False.

This rear piston lid is a straightforward, purpose-built component engineered for reliable fit and simple field installation — yinz get a no-nonsense solution that integrates with the GM-45 family. Its compact profile and factory thread pattern make it a practical addition to a parts kit when you need a durable, serviceable interface for compatible pistols.

Just a heads up, n’at: some of the product descriptions on our site are created or assisted by AI. We do our best to make sure everything’s accurate, but every now and then the info might be a little off—kinda like tryin’ to find parking on the South Side on a Friday night.

Details like specs, features, pricing, or availability might not always be perfect, so yinz should double-check anything important before buyin’.

If yinz spot somethin’ that doesn’t look right, give us a shout and we’ll fix it up quicker than a Primanti’s sammich disappears at lunchtime.

This is a regulated item and must be sent to an FFL but can be shipped direct to door for PA residents ONLY.

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