Hey guys, I just decided to buy a full tune up kit for my M4 to save cash. And I picked the ICS tune up kit at Airdog. I was wanting to know if this was a good reliable upgrade. Here is the link so you know what I'm talking about:
http://airdogairsoftonline.com/ics-m4-upgraded-upper-gearbox-w-4120.html
Hope this helps
Cheetah
http://airdogairsoftonline.com/ics-m4-upgraded-upper-gearbox-w-4120.html
Hope this helps
Cheetah