Hey, wondered if anyone could help me sort a few issue with my Glock 17. I bought it as a damaged product gun and have been trying to switch out parts and get it to function).
The slide is a heavy CNC WE slide and the remaining externals are stock TM or TM compatible aftermarket. I've tried to sand the slide near the rails to slide smoothly, which it now mostly does however it sticks very slightly about 1.5cm back in the action. Again though, the remainder of travel is very smooth.
The BBU is stock TM in the WE slide but the nozzle return spring is rather weak (I am not sure if it is stock), but even so the nozzle itself seems quite tight inside the BBU, regardless of how heavily I lube it and so doesn't retract fully when firing.
The slide locks back when empty sometimes, but not always - especially not if the gas is running moderately low.
Mags are TM and I use green gas.
The main issue is that the pistol does not cycle a new bb when shooting. I bought the gun with a 150% recoil spring, and think potentially a lower power spring will help the slide return further and more consistently? I thought that perhaps the hammer spring wasn't strong enough but a 140% spring has made no difference.
Do you think that my main issue is the nozzle return spring or do I need to look at purchasing an entire new BBU; if so do I go for WE or TM? I can try to sand the nozzle but I'm not sure where it is tight.
Or is my issue more likely to be the strong return spring and heavy / sticking slide in which case I should buy a stock spring and polish more?
There is also the issue that, with no mag in, if I rack the slide and release it unlocks itself and slides off the frame. Not exactly fantastic so would appreciate some ideas on why that happens, but it's not too much of a dealbreaker.
Thanks for the help and sorry for my incompetence. I'd love to go ahead and replace everything but I am but a broke student lol ;(