Weather it’s for the log term or just until your suppressor, or other muzzle device arrives keep you barrel threads safe without the added weight. Machined from grade 5 Titanium for maximum durability, strength, and corrosion resistance with minimum weight added. Diamond knurled for grip and bead blasted for comfort and reversible so you can’t put it on the wrong way. M18-1.5 thread pitch the most common thread pitch for 8.6 Blackout as well as some other large caliber barrels. Check with your barrel manufacture if you are unsure of the thread pitch on your barrel.