I built 1, same frame and and all that but I used a completely demilled glock kit used 100% OEM parts and worked flawlessly. My freind bought all aftermarket 3lbs parts kit and some 500$ slide blah blah blah, and still couldnt get it to go through a whole mag before failures to fire, reset, and eject. After installing a suarez trigger shoe with OEM trigger bar, and glock( - )connector it ran fine. These builds are fairly inexpensive but when they have problems its hard to diagnose.
I agree with who ever says run OEM only then start swapping parts when it starts to dull you. Btw; I destroyed mine after that one law took effect. So I can't show pics of what was the frame.