Walther P22 Threaded Barrel Adapter | 1/2×28 | 512105

This Walther P22 threaded barrel adapter converts the pistol’s muzzle to a 1/2×28 tpi configuration, enabling fitment of commonly available rimfire muzzle accessories. It is CNC machined from 304 stainless steel and finished in black nitride for surface protection. Machined flats accept a standard 1/2″ wrench for secure installation and the adapter ships with a threaded protector.

Typical uses include range training and sound-mitigated shooting with compatible accessories where permitted by law. The adapter is a factory spare part intended to maintain fit and function when adding threaded attachments to the P22.

Product Specifications

• The manufacturer is listed as Walther Arms.
• The manufacturer part number is 512105.
• The adapter is specified for .22 LR caliber use.
• The thread pattern is 1/2×28 tpi.
• The body material is specified as 304 Stainless Steel.
• The finish is described as Black Nitride.
• The adapter is CNC machined for dimensional accuracy.
• The package includes a thread protector.
• Machined flats allow use of a 1/2″ wrench for tightening.
• An additional feature is an M8 x 0.075 to 1/2×28 adapter, as listed by the manufacturer.
• The listed product weight is 0.05 (units per manufacturer data).
• The NFA thread pattern is listed as 1/2×28.
• The product model name is Threaded Barrel Adapter.
• The UPC is 723364205248.

This adapter is a straightforward factory replacement for adding standard 1/2×28 rimfire accessories to a Walther P22. Its stainless construction and nitride finish provide durable contact surfaces, and the included thread protector helps preserve the threads when an accessory is not fitted. For shooters who want a clean, tool-friendly installation and reliable thread engagement, this adapter provides a simple solution.