SilencerCo Delta Adapter FN Five-seveN, M10x1 to 1/2x28, Black - AC77

This is a muzzle thread adapter that converts FN Five-seveN pistols (M10x1 threads) to 1/2x28 O-ring engagement standard, allowing compatibility with .22 LR suppressors including SilencerCo's Switchback 22, Sparrow 22, Spectre 22, Warlock 22, and Osprey Micro 22. The stainless steel construction with o-ring engagement keeps muzzle threads clean and prevents suppressor movement during firing. Installation is quick and the adapter includes a thread protector.