I have for sale an ASE SL5 sound moderator for all 22 centerfire calibres and smaller.
These are excellent mods -Small and light weight - Stainless steel construction so no corrosion worries.
Thread 1/2 x 20 unf
Mod details - http://www.aseutra.fi/s-series-sl5-suppressor
£150 F2F or plus postage costs to your rfd. (Mod is on ticket )