No clearance slot, but it seems the swivel boss is not the loop type?
Is it a mixture, or what variation is it? All I have is these old pics, not since its been cleaned..
Thanks for any help
https://www.milsurps.com/images/impo...g?t=1290391498
https://www.milsurps.com/images/impo...g?t=1290391529