Question about KWA Mac 11
 

When I pull the bolt back the blowback tube/barrel that is supposed to pull back does not always go back all the way. It does not cause any trouble when I insert the mag but I was just curious if this was a lubing problem or how I might be able to fix it.
Regards,
Heyds

lube it and it may possibly be due to the hopup, i don't know because i own a tf11, and when that happens i just lube it and it works fine. IT worked fine without lubing but you never know.

It sounds like you may be using insufficient lubrication. The M11 can be a monster and definitely requires rigorous maintenance.

Thanks for your help guys, and yes it was lubing. Even after like 5 - 7 clips though I had to do it again. And another issue is the magazine. My bbs kept jamming (probably because there biodegradable) but I tried lubing where the bbs slide up and now the bbs are getting dirty in the magazine from some reason. I tried my best cleaning it out a bit, but I was just wondering is it ok I lubes the mag?