Soft metal - Hawke Sport Optics Picatinny /Weaver Rail Adapter - 2 Pieces. 9-11mm

The left-hand rail is soft enough metal that over-torquing the hex screws will pull them clean through. Use a torque wrench, and don't go past 10lb or so.
Pros: Does the job
Cons: May fall off at some point

This review was written in the old system and had content requirements that are different than reviews written today.