The DuoMini is Shadow Silencers new rimfire multi-caliber answer to lightweight, extremely strong and quiet silencer. Made of 7075 Aluminum and completely Milspec 3 hard anodized, the DuoMini is rugged enough for all your .22 needs as well 17WHR, and the mighty 5.7 x 28. Consisting of  our unique double blast chamber 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.