TacFire Compensator Stainless Steel With 5/8"-24 tpi Threads 2.50" OAL For 308 Win Stainless Steel Compact Compensator Is Made Of An All Steel Construction With a Heat Treated, Erosion Resistant Stainless Steel Finish. It Comes With a .308 5/8"X24 Thread Pitch. Reduces Recoil And Barrel Whip. USA Made. Model: Compensator Material: Stainless Steel Thread Pattern: 5/8"-24 tpi Finish: Stainless