OPS Inc muzzle brake kit for the 12th model suppressor
- 223 Kit 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)
- 308 Kit includes muzzle brake, and thread protector for the outer threads that the suppressor uses, and instructions. The 308 requires a gunsmith for permanent installation. Requires the use of Red Loctite (NOT included)
- Same system used on U.S. military Mk-12 SPR rifles
- Stainless steel construction
- Matte black finish
Big Book Catalog, Issue:68, Page:023
SPECS: Steel construction, matte black finish. 223 – ½-28 threads. 308 – 5/8-24 threads.