The DonnyFL Quick Disconnect Barrel Adapter is 1 part of 2 allows that allows you to convert your non-detachable DonnyFL moderators to the new quick disconnect system.

*This barrel adapter is the piece that threads onto the end of your rifle's barrel. You must pick the correct threads that match your barrel. 

*You will also need to purchase the new matching DonnyFL Quick Disconnect Rear Cap Adapter to replace the endcap on your existing moderator. *You must have both the barrel adapter and end cap adapter to convert your moderator to the new quick detach style.