Did not hold - DLG Tactical QD M-Lok Mount

Purchased for an AR build and when attached to MLOK handrail, it fell on my first trip out to the range. The stock and handrail was had a built in QD mount that held solid, but any way I tried to push the sling QD into this mount it would come out under any pressure or load. Very disappointing because I liked the style of this mount and it gave me more flexibility than the built in QD slots on my handrail.