Get your 22 suppressor-ready in a few seconds with a Delta Adapter. Available in multiple models, enjoy the benefits of o-ring engagement which keep the muzzle threads clean and prevent your suppressor from working loose under firing. Delta accessories are compatible with Switchback 22, Sparrow 22, Spectre 22, Warlock 22, and Osprey Micro 22. SKUS SIG MOSQUITO M9 x .75 adapts to 1/2 x 28 (AC4) WALTHER P22 M8 x .75 adapts to 1/2 x 28 (AC5) GSG 1911-22LR M9 x .25 adapts to 1/2 x 28 (AC61) FN Five-seveN  M10 x 1 adapts to 1/2 x 28 (AC77) S&W M&P 22 COMPACT 3/8 x 24 adapts to 1/2 x 28 (AC875) 1/2 X 28 to 1/2 X 28 O-RING ENGAGEMENT ADAPTER (Shortens .6" 1/2x28 threads to .4") (AC3) 1/2 X 20 to 1/2 X 28 (AC115) Compatibility Notes:

• Smith & Wesson M&P 22 Compact Adapter (AC875) is only compatible with the M&P 22 Compact. If you have the full size M&P 22, you will need the P22 adapter (AC5).
• Some GSG pistols use the Sig Mosquito adapter instead of the GSG Adapter. Confirm the thread pitch on your GSG to determine which you will need.