Does the job - Shooter's Ridge Picatinny Rail Gun Sling Adaptor

Given the stresses normally applied to a sling mount, I think an allen head or normal bolt head style would work better. This type of finger tighten is easy to move, etc but if you want a solid semi-permanent mount you have to scratch the head with pliers, or something similar.
Pros: Simple & Easy
Cons: Can only finger tighten

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