Otter Creek Labs Infinity 556K Features The Otter Creek Labs Infinity 556K is DMLS 3D printed and heat treated from Haynes 282 a high temperature alloy that the company states takes heat better than Inconel under extreme use. At 5.5 inches long and 14.5 ounces the suppressor is compact and light enough to avoid adding significant bulk or weight to a host rifle. There are no barrel length restrictions and no firing schedule restrictions when mounted on magazine fed 5.56 NATO guns giving shooters flexibility across a wide range of builds. On belt fed 5.56 platforms Otter Creek Labs recommends not exceeding a 300 round solid string of fire without a cooldown period and a vented end cap should be used in that application. One of the Infinity 556K s defining features is its adjustable end cap system which lets a shooter change the level of back pressure by swapping end caps with multiple levels of adjustment available. This allows the suppressor to perform optimally across a wide spectrum of hosts from a bolt action rifle all the way to a heavily over gassed AR or AK platform. It ships with a medium back pressure end cap installed while low and high back pressure caps are available separately for further tuning. Finished in matte Flat Dark Earth and built with HUB compatible mounting the Infinity 556K gives shooters a durable configurable suppressor backed by a lifetime warranty. Otter Creek Labs Infinity 556K Specifications Manufacturer: Otter Creek Labs Model: Infinity 556K Caliber: 5.56 NATO Length: 5.5 Material: Haynes 282 Color: Flat Dark Earth Finish: Matte Weight: 14.5 oz Available At: GrabAGun