I came across a poly 80 model 17 lower. It came with the jig, drilled the pin holes, removed the plastic where required. This particular 80 does not have the medal rear rails, instead the plastic gets channeled to crest the rear rail.
Bought all Glock factory 17 parts to complete the lower. No problems. Took the factory complete slide off another gun put it on this poly 80 to check figment, trigger break and trigger reset all good.
Range day insert mag, factory Glock mag and magpul mag, racked it and it felt stiff and didn’t want to let the slide go freely forward. Trigger would not pull. Racked the slide and the round ejected like it should.
Got home and started comparing the poly 80 to the factory gen 3 17. Note the poly 80 is gen 3 also with all gen 3 internals. The front block rails on this 80 do not pin in, there are two very small screws. I took the recoil spring out set it down in there and felt it might have been to tight compared to the factory 17. I filed some material away including the two screws that were resting against the recoil spring. Also put one round in a magazine and put it in the factory 17, outlined the trigger housing ejector with a sharpie on the shell casing. Put it in the 80, ejector was more left. Gave it a gentle tweak. Reassemble. Slide on. Feels better. I go outside. Safe backstop etc. this time she fired. One shot, ejected the spent shell, but the slide is still not freely going the full motion forward.
I’m heading in the right direction but this thing sure is a pain in the ass. One thing I did notice that I haven’t addressed or measured, the ejector in the poly seems ever so slightly longer. I will measure and take some material off if it actually is. There also feels like a slight rough spot when sliding the slide onto the poly 80 near the trigger bar. Going to look at this.
Has anybody had the poly 80 with the front block that screws in not pinned. Any tricks. Any help.
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