SKU: WA512105
UPC: 723364205248
MPN: 512105
The Walther Arms P22 threaded barrel adapter is a factory part for P22 owners who want to run a .22 LR suppressor or other muzzle device. It converts the pistol's metric M8x0.75 barrel threads to the standard 1/2"-28 thread pitch used across the rimfire suppressor market. That single conversion opens the P22 to a wide range of cans, compensators, and brakes that would otherwise be off the table with the gun's stock metric threads. For shooters building a quiet plinking setup, this is the connection point that makes the rest of the build possible.
Walther machines this adapter to mate directly with the P22's metric barrel, presenting a clean 1/2"-28 male thread on the muzzle side. Per manufacturer specifications it measures roughly 2 inches in length and weighs about 0.05 pound, so it adds almost nothing to the pistol's balance. Beyond the P22, Walther lists compatibility with several of its other .22 LR pistols, including the PPK/S in .22 LR, the Colt 1911 .22, and the PPQ chambered in .22 LR. One important note: this is the current-production version designed for newer P22 barrels. It will not fit older-generation pistols unless the barrel sleeve has been updated to the current spec. If you own an earlier P22, confirm your barrel sleeve before ordering.
Thread the adapter onto a compatible barrel, then mount a 1/2"-28 rimfire suppressor or muzzle device, and the P22 becomes one of the more affordable platforms for quiet .22 LR shooting. It pairs well with direct-thread cans and pistons cut for 1/2"-28, and we stock a range of silencer accessories to round out the build, including a 1/2-28 direct thread mount and matching thread protector. Once the adapter is on, you can swap muzzle devices as your suppressor inventory grows without touching the barrel itself.
It converts the Walther P22's factory M8x0.75 metric barrel threads to the industry-standard 1/2"-28 thread pitch. That lets you mount most .22 LR suppressors, compensators, and other 1/2"-28 muzzle devices that the stock metric threads otherwise won't accept.
This is the current-production adapter made for newer P22 barrels. It is not compatible with older-generation pistols unless the barrel sleeve has been swapped to the updated version. If you own an earlier P22, confirm the barrel sleeve matches the current spec before ordering.
Yes. Walther lists compatibility with several other .22 LR pistols beyond the P22, including the PPK/S in .22 LR, the Colt 1911 .22, and the PPQ chambered in .22 LR, since they share the same metric barrel thread.
It presents a standard 1/2"-28 male thread, so it works with rimfire suppressors and muzzle devices cut for that pitch. Always confirm your suppressor is rated for .22 LR and that your specific can uses a direct 1/2"-28 thread or a matching piston.
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