Sig Sauer Sig Sauer TREAD 3-Chambered Compensator 3-chambered compensator manufactured specifically for the M400 TREAD to reduce recoil and muzzle rise with a 1/2 x 28 thread pitch. **This compensator will work great on any 5.56 / .223 barrel!* MSRP: $49.00 Was: Now: $42.99 Add to Cart