So thought I'd set up my mag with the autoresponse frame today which I haven't used it, was going to machine-gun tomorrow. Frame works great on the single-shot option but when I pull the safety to the AR mode, it still only fires on the pull but on the release it makes an odd sound. Nothing too loud or anything but it's hard to describe, no chuff or anything. I'll try getting a video up later on.
Not sure if I didn't put the sear back in correctly when I was stretching it through the rail to put the pin in or not. Perhaps there's a better way to do it?