I recently did some in-depth familiarization with my KWA LM4 Magpul edition, meaning I took it apart completely and put it all back together again.
I was a little disappointed to find that the hopup on my gun was using a ball bearing as a spacer and not that brass doohickey that I see in the pictures. The reason being is that the ball bearing as a hop spacer has been used before and it never was a very reliable or accurate spacer for hop ups.
Sure enough, my LM4 isn't shooting as accurately as I'd like.
This was my reaction after taking the gun's hop apart... up until 22 seconds.
disclaimer: I really didn't pee my pants. honest.
Edited by freon, 15 October 2012 - 10:22 PM.