Check the listing for details. force fitting moderator Adapter Ruger Mk. II/III/IV 2/3/4. Condition: New. Listed at 95.00 USD. I offer a force fitting moderator adapter with ½ x 28 UNEF or 1/2 x 20 UNF thread in silver or black for the Ruger Mark 2/3/4 pistol with 5,5’’ long 2,2 cm thick Bull-Barrel. The adapter can easily be attached just by slipping it over the barrel and tighten the 6 screws. Through this force fitting connection the adapter does not scratch or damage your barrel but sits very thight and cannot move. You can still use your iron sights once the adapter is mounted. After use you can easily detach it again, you do not need any gunsmith work on your pistol. The item is made of very durable aircraft aluminium and it weight is just around 100 gram. It has a high quality seal inside and is therefore 100% gastight, the offer also includes a thread protection nut and a durable seal. The adapter is designed and made in Germany.