KJW M4 Can't break down.
 

Hey! So I have a KJW M4 and it was working fine until I shot it and it didn't shoot. I figured something's up in the bolt or something, so I pop the back take down pin and the gun won't come apart. From what it looks like it seems that there's something extending into the buffer tube. I opened the other end of the buffer tube and removed the spring and the guide, and it's still jammed. I made sure the bolt was also in the most forward position. I removed the front take down pin, and still the gun won't split in two. I've searched and searched and can't find anything about this X___x. Anybody know what's up? Thanks!

Did you look down the tube with a flashlight?

Indeed, but I did not see any debris or anything that could look like it's out of place, unless whatever is jamming it is cylindrical? I also looked at the exploded diagram, could not make out anything that would block it there..

This type of problem is common with all GBBR AR Platforms except for daytona ;)

If you are going on the 28th I can fix it on the feild, OR msg me on FB

You'll have to disassemble the receiver extension and remove it. Not terribly bad if you have the right tools. Is your bolt carrier group fully forward and seated?

I took the buffer tube off. what it turned out to be was there wasn't any lube between the first and second part of the bolt so it jammed there. I loosened it by turning the insides with the alan screw, then gave it a nice lube job, everything works well now.