I say build it yourself if you know how, i just got done tearing mine apart and adding to it. Are you planning on playing with sac airsoft with above 400 fps?
Correct me if I'm wrong but I used the less than sign, indicating under 400 fps.I know I need to keep it legal.
have you looked at mechbox.com? they have a great tutorial on tearing apart and rebuilding a complete gearbox
Team Rebel Wolves
How fast of a ROF do you want?
Don't care about the rof as long as it's faster tham stock.
I think you should build it yourself for a couple of reasons:
MLG is NOT a sport.
Hmmm well you can do a number of things you can buy a complete GB and just add things as needed. Surprisingly JG GB do really well. Now 400 FPS limits your ROF so your not gunna get anything amazing but looks like your looking for mainly semi. Some things you should just look for are as follows.