Any advice on a 458 SOCOM upper?

[DrHenley]

Originally Posted by Horse'nround

So whats your barrel thread pitch 5/8-24 or .578×28(45acp)?
you could always try the oil filter adapter game til you properly certed (mugged) and get the real thing...

Looks like you got your sling mount figured out.

Believe it or not, I do not know what the thread pitch is. I will have to remove the flash suppressor to find out. The dealer didn't know, and the web site for the manufacturer isn't working right now.
The sling is just temporary. Clipping onto the fixed sling swivel on the butt doesn't really work for how I want to carry the rifle up a ladder into a deer stand, but deer season is over so no hurry on that. I have found a QD mount that attaches to the webbing slot but they are out of stock.

[Horse'nround]

So if you wanted to mount the QD on a little more open space of the panel you could use one of these.

https://monstrumtactical.com/m-lok-s...-sling-swivel/

[DrHenley]

Originally Posted by Horse'nround

So if you wanted to mount the QD on a little more open space of the panel you could use one of these.

https://monstrumtactical.com/m-lok-s...-sling-swivel/

Yeah, that's what I was talking about. It's in the picture, along with a simulation of two holes I could drill holes to bolt it on.

Originally Posted by DrHenley

I think what I am going to do is just drill two holes somewhere below the webbing slot, and bolt one of the M-LOK QD swivels on. Probably need to cut a steel plate to go on the opposite side so I don't pull through the thin plastic.