There is a take-down pin made by KNS Precision called the KSG push button take down pin & QD sling swivel adapter. No screws. Push the button to remove the QD adapter, then push the button again to pull out the pin. I can't add a link because I am still a newbie, but "knsprecisioninc.com" will get you to the web site. Search on their site for "KSG"I dont want to unscrew the take down pin for a field strip either. Assuming I'm not drilling holes in anything, is the only option to run a sling through the slot on the butt? I don't think the mlok slots are strong enough for a sling.