6.5mm – 5/8×24
Hawkins Precision’s Tank ST is a self-timing, 4 port muzzle brake designed to greatly reduce recoil for precision rifle applications. The Tank ST features a self-timing, locking collar design made in collaboration with Greg Young at Southern Precision Rifles/BugHoles.com. This unique design allows the user to install their brake and lock down the collar so it times on the barrel exactly the same way every time it’s installed.
Its straight 4-port design cuts recoil while also producing less concussion and blow back on the shooter. This reduces shooter fatigue over long strings of fire, or long days of shooting at precision rifle matches. The ports are also designed to collect less carbon, and thus need less maintenance.
The Tank ST features a 3/8 Hex Bit opening up front so users can torque down their muzzle brake to the same torque value every time. This, combined with the locking collar, allows for consistent mounting with minimal to no POI shift when removing and reinstalling. (Recommended 65 in-lbs. to 100 in-lbs.)
Made in USA, out of 17-4 Stainless Steel, the Tank ST comes in 6mm, 6.5mm, 7mm, and 30 cal variants. Outside diameter is .990”, 5/8-24 thread. 6.5mm versions weigh 3.744 oz.