In addition to their line of AK accessories, Echo Nine Three is a full-service gunsmith with a ton of experience with the AK family of rifles. E93 occasionally shares easy, DIY AK improvements that you can do at home and I always learn a lot from them. The most recent is an fairly easy way to add a QD sling swivel socket to your AK Triangle Folding Stock.
You’ll just need a 3/8″ drill bit and a 1/2″ drill bit. A drill press would probably be nice but a vice and handheld drill will suffice.
You can find the tutorial on Echo Nine Three’s Facebook page. Each image has its own included instructions so be sure to click through the whole gallery before beginning.