Have you ever had your thread protector come loose? Place this O-ring between the barrel and your thread protector and tighten it down hand tight. The compression of the O-ring will add sufficient friction to keep the threat protector from coming loose.
NOTE: This O-ring MUST be removed before using a muzzle device, such as a comp or suppressor. Shadow Systems will not be liable for damage caused to a suppressor by firing it with the O-ring in place.
Restrictions: By buying this item from Shadow Systems, the Customer certifies that the Customer will comply with any and all requirements imposed by applicable U.S. federal, state, and local laws, regulations, and administrative policies.