Really odd G36 feeding problem

[AuroraUnit117]

Hello! I have a very odd problem that i havent found a solution too in alot of looking around. My g36 rolls bbs out of the barrel....but only when the midcap mag is full. Once the mag gets down to 3/4-1/2 it starts feeding flawlessly. I chronod it and its shooting at 295-300 fps consistently when it feeds(what its supposed too), so no compression issues. I noticed the little clip inside the hop up chamber is a little worn down, which i assume is causing it. But that still doesnt explain why it only doesnt feed when the mag is full. Any help guys?

[redzaku]

replace the hop up, and down load the amount of bb used then

[Kos-Mos]

Most likely a worn hop-up rubber.

Is it a TM? If so that' the correct FPS. About anything else is supposed to fire quite a lot higher than that however.

The clip should be really firm when in place, and should lock on both sides in the groove cut for it (in the barrel AND the hop-up chamber, there are keys for that).

If it moves around or feels soft, or if you can pull your inner-barrel a tiny bit out of the hop-up chamber, your clip is damaged.

There is also supposed to be a stop at the top of the hop-up unit. There is a spine on the nozzle that pushes it up, but the spine is not necessary.
If that stop does not protrude in the path of the BB, that might also be why you have issues.

[Darklen]

Is the midcap a Magpul PMAG? If so I have the same problem. Won't feed work a shit when filled to 120 but as soon as it hits 100, it's smooth as glass.

[AuroraUnit117]

Originally Posted by Kos-Mos

Most likely a worn hop-up rubber.

Is it a TM? If so that' the correct FPS. About anything else is supposed to fire quite a lot higher than that however.

The clip should be really firm when in place, and should lock on both sides in the groove cut for it (in the barrel AND the hop-up chamber, there are keys for that).

If it moves around or feels soft, or if you can pull your inner-barrel a tiny bit out of the hop-up chamber, your clip is damaged.

There is also supposed to be a stop at the top of the hop-up unit. There is a spine on the nozzle that pushes it up, but the spine is not necessary.
If that stop does not protrude in the path of the BB, that might also be why you have issues.

Yeah that stop is what i was talking about. its worn down a little. But the hop up rubber is fine, i checked it first. The locking clip is fine too. And i have a m90 spring in it, thats why the fps is so low.