Grizzly Muzzle Brake 18.2 Mm Diameter 5/8 X 24Tpi 1/2 X 28Tp Thread

Australian made muzzle brakes.??

GB18.2 Specs:

Outer Diameter = 18.2 mm

Thread Sizes Available = 5/8 x 24TPI and also available in 1/2 x 28TPI??

Fits:

Good universal size which can be turned down to suit slightly smaller barrels.??

Good for new Lithgow models post 2018 (use 1/2 x 28TPI for .223)??