[Stealth]

Originally Posted by Styrak

Yes a King Arms M4 is pretty standard. You can also get stock/receiver plates that have a QD attachment like this:

http://shop.ehobbyasia.com/gandp-kac...-m4-aeg-1.html

That wouldn't work for a full stock.
Me personally knowing the "quality" of JG plastic, would not trust a QD point drilled into the plastic like that. It's just asking to get your stock cracked.

There are some M16 sling adapters out there. Rare but they're floating around somewhere. You're looking for something like this: