The Osprey's unique shape makes it the only multi-caliber polygonal pistol silencer on the market. The monocore baffle design in a polygonal package allows for greater internal volume and therefore better sound performance. The Osprey utilizes a push button locking system for quick indexing. This system allows the majority of the suppressor to sit below the shooter's line of sight, thereby not impeding standard pistol sights.The Osprey 2.0 was designed to be used "wet" or " dry." Shooting "wet" temporarily improves sound suppression by inserting a small amount of ablative media. This can be done by inserting about 5cc's (or a typical water bottle cap full) of clean water or clear wire pulling gel into the back of the silencer.CALIBER : 9MM & 300 BLK SUBSONICWEIGHT : 8.8oz*LENGTH 6.90"DIAMETER : 1.30 X 1.75"MATERIALS : ALUMINUM & 17-4 SSMUZZLE AVERAGE : 9MM - 129.5 dB / 300 BLK SUBSONIC - 128.8 dB