The new M-LOK GI Sling Swivel from Magpul is, as the name implies, M-LOK compatible so you can attach it to any compatible mounting surface like free float rails and MOE Hand Guards. However, it is really going to excel on Magpul’s rifle stocks like the Hunter 700 and X-22 stocks. These would be perfect for those who want to use a shooting sling in conjunction with these stocks.
It bears an obvious resemblance to the GI style swivel loops that everyone removes from their AR-15 gas blocks these days to make room for free float hand guards. These large coated steel loop is the the ideal fixed mounting point for shooting slings that will exert a lot of tension on your sling mount when pulled tight.