The Kaw Valley Precision Gen 2 Suppressor Piston in 1/2×36 (brand part no. KVPPISTON1801) is a replacement fast-attach piston sized to a 1/2×36 muzzle thread, giving owners of a compatible fast-attach suppressor a secure, repeatable mounting point common on many rimfire and small-bore rifle hosts. Kaw Valley Precision’s Gen 2 design tightens tolerances over earlier pistons for more consistent point-of-impact retention when removing and reinstalling a can. As with all Kaw Valley Precision piston sales, this is a mounting accessory sold separately from the suppressor itself, is not a regulated NFA item on its own, and requires no ATF transfer paperwork to purchase.

Key Specifications

• Threads onto a 1/2×36 muzzle, common on rimfire and small-bore rifles.
• Built as a Gen 2 fast-attach piston for improved point-of-impact consistency.
• Sold as a replacement or spare mounting piston, separate from the suppressor body.
• Sold as a replacement or spare piston, separate from the suppressor.
• Threads directly onto the host’s factory muzzle threading.

Frequently Asked Questions

Do I need an ATF Form 4 to buy this piston? No, this piston is a mounting accessory sold separately from the suppressor; buying it alone involves no NFA transfer paperwork.

What hosts typically use a 1/2×36 thread? This thread pitch is common on many .22-caliber and other small-bore rimfire rifle muzzles.

Buy the Kaw Valley Precision Gen 2 Suppressor Piston, 1/2×36

Keep a spare mounting piston on hand with this Kaw Valley Precision part from our Class 3 parts and accessories lineup. Order it from our Lubbock, Texas gun shop for fast, direct shipping to your door.