The first time I ever shot my PC Carbine, I had a a small number of misfeeds, but only with the Glock 33-round "funsticks". I finally diagnosed the cause as the following....Grayling813 wrote: ↑Fri May 15, 2020 8:38 pmFactory ammo, factory Glock mags that haven’t had any issues in PC Carbine.Rafe wrote: ↑Fri May 15, 2020 6:16 pmThat's unfortunate. Please keep us informed if that continues or straightens out after more range time. If the mags aren't a problem in your pistols, I assume it could still be a feed lip issue or something, but it strikes me as unlikely...especially if different mags all have the problem. If it's the ejector or recoil spring, I can't imagine more rounds would help. I'm guessing it can't be soft-shooting handloads?Grayling813 wrote: ↑Fri May 15, 2020 12:32 pm Took it out to shoot for first time yesterday. Set up to use Glock mags. Had several stovepipes, which I’ve never had on the PC Carbine.
Very fun to shoot except for the stovepipes. Hopefully just a break-in issue.
I'm still thinkin' about getting one of these. But not if they FTE all the time.
There's a very small amount of play in the fit between the magazine and the magwell when the magazine is inserted. The longer the magazine, the more leverage can be applied against that play by forces acting on the bottom end of the protruding magazine. I realized that I had been using the magazine basepad as a rest to support the weight of the carbine on the bench while shooting it, and without intending to, I had been applying a small amount of forward pressure against the end of the magazine—much like if I had been preloading a rifle bipod with forward pressure. That forward pressure was enough to tilt the magazine feed lips downward just enough to misalign them to the feed ramp, causing nose-down feed stoppages.
Unweighting the stick mag from the bench made the problem go away, and the problem never happened with any of my 10, 12, 15, 17, or 19 round magazines because they were too short to be used as a "rest" while shooting the gun. Once I had diagnosed the problem's cause, it went away.
Grayling813, check and see if that isn’t the problem with yours.
