The sRx protective cap will keep the threads on your sRx mounts from becoming dirty or damaged when your suppressor is not in use.

Features :

• Weight: 0.448 Oz.
• “Length: .5625″;”Diameter: 1″”
• Material: 4140 chrome moly steel
• Finish: black oxide
• “Designed to be used with the YHM sRx System & any suppressor with 1 3/8″ thread.”