The Tuna Cans BackFin - XL is the longest BackFin option for shooters who want maximum internal volume and the most baffle stack while still keeping weight down. It's a dedicated suppressor for .300 Blackout and 8.6 Blackout, built to run hard without turning your rifle into a boat anchor. Up front, it features a large 3 blast chamber made from heat-treated 17-4 stainless steel, plus a heat-treated 17-4 stainless first blast baffle-built to take the highest heat and pressure where it matters most. The remaining baffles and the end cap are made from aero-grade 7075 aluminum, saving weight while maintaining durability.