Thread Protectors

One piece steel construction with a Black-Oxide Finish.

STANDARD THREADS
GTHM242 1/2-20 x .625" Fit to Barrel (Some .22's)
GTHM243 1/2-28 x .920" 10/22 Bull Barrel
GTHM244 1/2-28 x .641" After market 9mm Barrels
GTHM245 1/2-28 x .705" Most AR Barrels
GTHM246 1/2-28 x .625" Pencil Barrels
GTHM247 5/8-24 x .750" AR10, .300AAC Black-Out

METRIC THREADS
GTHM248 14 x 1 Measure to Fit
GTHM250 15 x 1 Measure to Fit