I have a mak90 that was converted with a 56s-2 side folder . Riveted to the receiver . Real cool piece. But the rear sling mount D ring is missing and Ive been looking for literally years and I cant find it anywhere. I tried to find a close up but failed. Its a standard d ring that snaps onto top and bottom recesses on the folding mechanism . Pretty standard . So yea . if anyone knows where I can find one it would be greatly appreciated .