Neither end pops out of qd mount under stress - Magpul MS1 MS4 Single Point Dual QD Adapter

I resisted the QD mount system for many years because I didn't believe any manufacturer could make it reliable enough to use in the field.
However, I was impressed by the reviews of the Rainier Arms AR-15 end plates with a QD slot built in, so decided to try to the mapgul QD system.
I now have several of these MS4 extensions along with magpul slings with QD mount points, and all of them hold just fine under stress. Haven't tried hanging off a cliff by one yet, but certainly will trust my rifles with them.
Additionally, the fab defense QD fx-sls also holds like a magpul QD mount point, if you don't need the MS4.