KJW M4 upper receiver problem
 

Hello there guys,suddenly after the shooting I noticed that my upper receiver started to go upwards a little bit,so I looked at it and it seems that the pin gone completely broken off from the part,so how's that could happen and what's the cheap fix for that ?https://image.prntscr.com/image/IOhR...mMBAuEuuNg.jpg
https://image.prntscr.com/image/3IW3...y73sFvP6TQ.jpg

Are you talking about the pins that hold the upper and lower together or did the block at the back of the upper break off?

Actually this one :
https://image.prntscr.com/image/IFIL...xetLWK1r-g.jpg
https://image.prntscr.com/image/dbay...J9oVsRHT3Q.jpg

You'll have to re upload your pics. The link is not working on my end.

https://prnt.sc/nhv002
https://prnt.sc/nhv034

Pictures working in my side,but just click on those links to see.

Ok, I had the exact same part break. Long story short you need a new upper receiver. 007 airsoft in Calgary stocks them.

You can run it without that pin by running a ziptie through the trigger guard and then over the top to hold it together buts thats a temporary "up shit creek" solution.

So you think that part broke because it was weak or it's just design and will always break ?