OPS Inc muzzle brake kit for the 12th model suppressor
- 22/.223/5.56mm includes muzzle brake, barrel sleeve with set screw, crush washer, and thread protector for outer threads that suppressor uses and instructions. Requires the use of Rocksett (NOT included)
- Same system used on U.S. military Mk-12 SPR rifles
- Stainless steel construction
- Matte black finish
AR-15, Issue:11, Page:024
Big Book Catalog, Issue:70, Page:022
SPECS: Steel construction, matte black finish. 223 – ½-28 threads.