Locking Sling Clip

[GrahamS]

Can anyone tell me where I can find a locking sling clip.

I bought a cheap bungee sling which is solid and works great all with the exception of the sling snap clip that clips to the rifle mount.
As it's on a M4 style ambidextrous type mount when the rifle is hanging and rotates it twists the clip to the point where the spring loaded part is pushed past the hook.

So I'm trying to rescue the sling by replacing the clip with one that will securely lock onto the rifle mount.

Don't really want a snap shackle like the ons on the magpul MS2 as I don't trust them.