SPECS:

MilSpec 416 Stainless

5/8x24 Thread 

3.3 Ounces

2.5" Length

.85" O.D.

3 x .125" Comp holes, for vertical recoil reduction.

6 x .25" Brake ports, terminating slightly below the device's center-line to prevent prone dust up and maximize recoil reduction.

Thread Pattern: 5/8x24 or 5/8x32 

Fits both 450 Bushmaster and 458 SOCOM