Quote Originally Posted by ViniVidivici View Post
Damn, I must be lucky. Got one, PF9C (G19 length). Went together easily, but I researched alot, learned a few tips from others who'd built them.

Got close to 1,100 rounds through it now. It has not yet malfunctioned. Run with a variety of ammo in 115, 124, &147gr. Has run everything we've put through it.

Brownells slide, Glock OEM internals (save for the Zev Pro-Conn Connector that mates up with a NY1 trigger spring, my preferred trigger in 2nd and 3rd gen).

Have used G19 and G17 mags, with and without factory +2s, as well as Magpul 17 and 21 rounders.

80% with a cheap Combat Armory barrel, 30% with a stock G19 barrel.

That front pin walking out is easily cured by melting the frame a bit at each end of the pin, to block it in.

I love the gun the more I shoot it, have even used it in some "drill of the week" over on PF. The grip is outstanding.

I don't get it, maybe some of the frames are lemons.

OP, have you made sure there's enough clearance in the bottom of the frame, as was suggested? I know yours is serialized and prebuilt, but I'd check that.

May be a tolerance issue/defect in the Brownells slide also. Sounds like things are tighter than they should be. Maybe the Apex extractor will help.

What brand of barrel are you using?
It’s absurd you’d have to heat the polymer to prevent a pin from walking. As far as I can tell, I have the same clearance between frame and slide on all 4 sides as I would on an OEM Glock. As I said before I am using all OEM parts minus apex extractor, this includes an OEM Glock barrel (gun does shoot accurately). The fact that I had a lot of brass shavings tells me a large part of my problem is likely in extraction, so yes hopefully the Apex FRE solves this issue. If it arrives by Friday, I’m going to give it another go with the new extractor.