How to fix Glock FTF issue

[JohnMick96]

Picked up a Glock 19C gen 4 a while ago and took it to the range. I was getting a Failure to feed every other round. I initially thought it was the mag extension(strike industries EMP +5) but I tried running a OEM 15rd and 17rd mag with the same results.
Also tried 3 different types of ammo with no avail(hornady critical duty/ magtech FMJ/ Winchester FMJ)

What part can I replace for a quick fix?

 

[LordMDP]

I am no Glock expert but does it have any aftermarket parts or 100% oem?

 

[JohnMick96]

I am no Glock expert but does it have any aftermarket parts or 100% oem?

Got it from another trader but I’m pretty sure it’s all OEM. Aside from the stippling and night sights

 

[Boot71]

Are the mags abnormally loose when inserted?

 

[JohnMick96]

Are the mags abnormally loose when inserted?

No they’re pretty tight feels normal

 

[JohnMick96]

Pictures for reference. Usually happens at the range but I just Locked the slide back and released it these were the results

 

[Boot71]

Is "fail to feed".......
Failure to strip a new round from the magazine?
Failure to completely chamber the new round? (Gets jammed crooked or sideways? )

 

[Boot71]

Have you thoroughly cleaned the chamber and perhaps tried a new recoil spring?

Is the exctractor damaged in any way, preventing the base of the cartridge from sliding up the breech face like it should?

 

[1Zero’DinGrifo]

Check the recoil spring , and make sure to clean it and lube it in case something’s jamming it up.

 

[JohnMick96]

Is "fail to feed".......
Failure to strip a new round from the magazine?
Failure to completely chamber the new round? (Gets jammed crooked or sideways? )

Check the recoil spring , and make sure to clean it and lube it in case something’s jamming it up.

Cleaned and lubed when I bought it and after the range trip. May in fact be the recoil spring just read that other people with the 19C have the same issue