Hughes Precision .578″×28 RH Fluted Thread Protector for 45 ACP – SKU#9450

.578″×28 RH Fluted Thread Protector [0.690″ OD, 0.500″ OAL, FOR: 45 ACP] – SKU#9450 This is a .578″×28 RH machined thread protector which is 0.500″ long with a fluted 0.690″ OD. It fits barrels and adapters using .578″×28 RH threading, commonly found on .45 ACP pistols. Don’t run the risk of damaging the threads when muzzle accessories are not being used. Thread Protector is High Quality 4140 Steel with a Black Oxide Finish. Please measure the length of the thread on your barrel or adapter to be sure that 1/2″ LONG will cover your thread. ALWAYS VERIFY YOUR MUZZLE DEVICE IS RATED FOR THE CALIBER YOU INTEND TO SHOOT ALWAYS VERIFY PROPER ALIGNMENT BEFORE FIRING