Originally Posted by Chromey
Thanks for all the help guys... My M4 took a shit on me this weekend, And I don't know if I want too fix it or drop in a new one.
I haven't taken it apart yet.
The aeg fires on and off. When it stops, I give it a bump, and it starts too work again.
All AR's take V2 mechboxes...
You could have just asked us what mechbox is in an M4.....or Googled it in 5 seconds.