The Tuna Cans BackFin (6-Baffle) is built for shooters who want a suppressor that’s lightweight, crazy strong, and purpose-built for .300 Blackout and 8.6 Blackout. This is a dedicated BackFin can designed to handle hard use while keeping weight down—perfect for setups where balance matters.

Up front, it features a large 3″ blast chamber made from heat-treated 17-4 stainless steel, along with a heat-treated 17-4 stainless first blast baffle—built to take the hottest, harshest pressure and erosion where it matters most. The remaining baffles and the end cap are made from aero-grade 7075 aluminum, saving weight while maintaining strength and durability.

With a .375 bore, 1.625″ OD, and a compact 6.75″ length, the 300BackFin delivers big performance in a lightweight package—coming in at just 10 oz.

Specs

OD: 1.625″

Length: 6.75″

Weight: 10 oz

Baffles: 6

Bore: .375

Blast Chamber: 3″ heat-treated 17-4 stainless

First Blast Baffle: heat-treated 17-4 stainless

Remaining Baffles + End Cap: aero-grade 7075 aluminum

1.375×24 standard TPI Hub Threaded ( DOES NOT COME WITH A MOUNT)

Bore / Caliber Notes

Dedicated for .300 Blackout and 8.6 Blackout

Bolt-action rated: 7.62 / .308 / 300 Win Mag / NO 9MM

Full-Auto Rating

FULL AUTO rated: .300 Blackout / 8.6 Blackout