Wanted to give a shout out to AK Master Mount and recommendation for their product. I purchased one for my PSA AK47 GF3 because I saw the product on PSA's website and figured it would probably fit their rail if PSA was listing the product on the site. When I first tried to get it on it pretty loose, I torqued down the set screw on it and gave it a few taps but it wasn't moving much. I thought there may have been something wrong with the mount initially so I filled out a contact form on their website asking for assistance, the form said they'd get back to me within 5-7 days so I figured it'd be a minute.
I got an email back probably within 30-45 minutes asking to send some photos from various angles. After going back and forth via email, he asked me for a contact number and the owner/designer gave me a call (this was around 6-7pm or so at this point) and spent a good 20 minutes on the phone diagnosing the problem and sending photos back and forth. We finally concluded that the rear rivet on the side rail hadn't been properly flattened by PSA during install which was preventing the mount was clamping like it should have (sent the rifle back to PSA to fix that and the overly tight magwell and they took care of it without much issue).
Fast forward to after I get the rifle back, I emailed him back and said that the clamp on with the set screw had gotten some metal sheared off during initial install when I was trying to get it on initially and asked if I could buy another one from him. He just asked for an address and dropped one in the mail or day or 2 later.
I ran the mount in a weekend training class and had no issues with, would absolutely buy one again over a Midwest Industries mount and it comes pre-drilled for both picatinny or ACOG mount instead of one or the other. Very happy with the mount and very impressed with the customer service.