[LocoYokoPoco]

Originally Posted by White_knight

got some new parts for my m4, if you want a rock solid gun with absolutely NO rattle in the receiver, get the RAtech magic pin. i highly recommend it

http://www.airsoftparts.ca/store2/in...oducts_id=2114

I don't know about you, but I had to file some material off the lower to get the pin to fit correctly. But otherwise, it makes the gun absolutely rock solid.

Originally Posted by StanB.

Just the front pin? Just the rear pin? Or both?

It's the front pin.