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