weird ftf and fte polish ak

My buddy has a polish AK built on itm arms receiver. We tried about 5-6 different magazines all had same issues. The empties would only like hapf way eject or they would come all the way out and only half feed new round? Then he would rack it again and it would fire 5-6 rounds with no issues?

Check to see if the ejector on the left side lower rail is long enough.
And that it is high enough, it needs to be up against the bottom of the bolt.
If the ejector is not long enough it won't hardly eject at all.
If it is too low it will eject the spent brass straight up into the top cover & not out the ejection hole.

Got a pic for reference? But I did notice it was ejecting empties out fine when it worked right? Out the side and slightly forward?

Any reason this one side is cut lower than other?

Weird all the triggers I have are the same on both sides..... But I dont understand why that would give you Ejection problems.... I can see a Saftey lever problem or hammer spring problem but Im confused on why a ejection issue with this Pic....

It shouldn't be. Not sure if safety lever would block the trigger.

Well a new trigger has been ordered to replace that back job. Had bad trigger slap also so should fix that too.

It has been cut for clearance for your selector. It won't have any effect on your feeding/ejection problems.

The ITM receivers are grossly out of spec at the height of the safety lever. It is way too low. They had to cut either the trigger or the selector to make it function.

It sounds like it isn't getting enough gas. Measure your gas port through the gas block. It should be a 45 degree hole at 3.5 mm. I'm assuming it is a US made barrel. It is possible that the hole is undersize - I just had a century in where the port was only 2 mm. Way too small. The problem will be compounded if its a US barrel with a 90 degree gas port. For that, you'll need to pull the block off to open the port. You MIGHT be able to cross-drill the port. Its worked on using L1A1 barrels with metric gas blocks, but I don't know if the angles will overlap properly on the AK and don't feel like destroying a barrel to find out.

I also had a CAI gun in recently (same one) where the chamber wasn't deep enough. The scary thing is it still headspaced as the problem was in front of the gauge datum point on the shoulder. It still sometimes mashed the case in, but then had failure to extract. Since this was combined with the undersize gas port, I was unable to determine if it would have caused bad extraction with the correct port and incorrect chamber (and didn't feel like shooting a gun with known bad chamber.

If the builder used the same barrels that CAI used, that may be the problem.

Notice the difference in height

both headspaced properly

Well the tapco trigger went in with no issues and selector works fine?

Any pictures to check what the gas block and stuff may need to look like?

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