[Forever_kaos]

So I recently acquired an AKS-74U and was informed from the get go it had feeding issues.

So whatever, when I got it I tested it and it jammed on the first round.

Now the jam was not too far in the hopup, I could slightly see the BB sitting in the hopup/mag well area.
(Note the hopup unit in the SU is a TM and the rubber is a Guarder clear)

So I decided to break down the hopup unit and see if something there does not look right.

When I tried to remove the inner barrel it was tough as hell, imagine trying to piss out an ice cube. You get the idea, it was crazy hard I thought I was going to break the hopup unit.

So I managed to get it out after a little while, all looked good.

I decided to try my other AK hopup and barrel (both Cyma with Element rubber) and it shot like a dream, all was good.

So I replaced the the TM unit with my Cyma and it now shoots wonderful.

Any idea why the TM unit was causing the gun to jam?

I've used a TM unit before with my current mags and brand of BB's with no issue in another gun (mind you it was a different gun entirely)

Cheers.