Specifications:
width: 28mm
total length: 71 mm 
length added to the barrel: 57 mm
height: 25 mm / 0.98"
weight: 108 grams / 3.9 oz (brake)
muzzle thread: 1/2 x 28 TPI
3 threaded extra port for fine tune
crush washer included
 
Our advanced geometry muzzle brakes are designed to be highly effective in eliminating felt recoil and muzzle rise for quicker, more precise follow-up shots. Made of extremely strong stainless steel and treated with QPQ nitriding for superior durability, heat and corrosion resistance, they outlive most of the barrels and competitors' products. Professional workmanship guarantees perfect concentricity for maximum accuracy.
 
Large ports on the sides compensate for recoil while hole on the top compensates for muzzle rise. Hole on the right compensates for rifle movement to the right. Ports on the sides direct exhaust gases backwards, yet past the shooter. This provides far better compensation compared to directing gases directly sideways. The bottom of the brake is designed to minimize dust printing when shooting prone. As a bonus, the aggressive looks of the brake gives your rifle that extra touch.
 
The brake is designed to look equally good on all diameter barrels. Suitable for bullet diameters up to 5.8 mm. To maintain its durability, modifying it to accommodate larger diameter bullets is not recommended.
 
Holes are threaded for adjust left or right handed shooters and able to play with different settings. Can be drilled larger for more thrust - extra durable drill bit, cutting oil and low drilling speed is required.
 
We believe our NEW brake is most effective brake ever made and may compared with Open Tank MB