did you try tightening the harris screw with an allen key first?
I'm almost certain I have the same as yours, and I mounted the harris without problems, tightening well
did you try tightening the harris screw with an allen key first?
I'm almost certain I have the same as yours, and I mounted the harris without problems, tightening well View attachment 8708032
The OP’s is a sling loop plate/adapter. The bipod plate/adapter is thicker (really just the sling loop with a couple slivers of metal attached to either side).
It’s the L115A4 spec. Sporting Services sells the correct picatinny rail for it, but I don’t think the spirit level is even included, so it’s just a bare rail with a slot at the back for a level.