Australian made muzzle brakes.
The GB15.6 Grizzly muzzle brake is designed for calibres up to .30cal. These brakes are an easy, convenient screw on design that do not require any crush washers or special tools. Just screw the muzzle brake on all the way to the shoulder of your barrel and then fasten tight with the tool provided. Due to the perfectly aligned machined gas ports, this design disperses energy evenly around the brake, creating greater balance thus eliminating deviation from the muzzle blast.
PLEASE NOTE - Calibres over .30cal must be modified by a gunsmith.
The GB15.6 standard thread sizes are:
The GB15.6 Dimensions are 17.40mm (0.685in) diameter at the base, 15.6mm (0.614in) at the tapered end and 62mm (2.440in) in length and it weighs 43-48 grams (1.51-1.69 oz)
The GB15.6 Barrel profile is suitable for the following firearms for a flush fitting muzzle brake:
"SSAA Reviews the Australian Made Grizzly Muzzle Brakes" read on....