The DuoDuo is Shadow Silencers rimfire multi-caliber answer to lightweight, extremely strong and quiet silencer. Made of 7075 Aluminum and completely Mil spec 3 hard anodized, the DuoDuo is rugged enough for all your .22 needs as well 17WHR, and the mighty 5.7 x 28. Consisting of 8 baffles, and our unique blast chamber the DuoDuo weighs in at 6.5oz and 6.1 inches in full configuration and mere 3.8 oz in the mini configuration (3 baffles). It is comfortable in a wide variety of pistol and rifle applications and will run up to 35% cooler than competitor products allowing users to remove and transport more quickly. Ships with 1/2 x 28 direct thread adapter.