Backstrap plugs fit into the bottom of the backstrap and pin in place.
Flat Plug: closes opening in bottom of backstrap to create a smooth, cosmetically appealing appearance. For use when you are not attaching the magazine well.
Magwell Plug: attaches the polymer magazine well. The plug is designed to yield and break if excessive force is applied to your magazine well to prevent damage to the frame. Get a few extras in case you need them.
These are meant to fit only Shadow Systems proprietary framed pistols, the MR/DR/XR pistols, including MR918.
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.