The Tuna Cans 5.56 - XL is the largest version of our hard-use 5.56 lineup-built for shooters who want maximum baffles, maximum internal volume, and maximum durability without the premium price tag. Made in-house in our Texas warehouse from heat-treated 17-4 stainless steel, this is a serious can designed to run hard. The XL model features a 12-baffle stack with ribbed baffles to increase turbulence through the chambers for strong performance. The threaded baffle system means each baffle screws together, creating a solid, serviceable stack that's built for heavy use.