If I wanted to upgrade my Echo1 VA Mp5a4

What would you guys suggest I put into it? As of now I have about 100 so dollars to spend on upgrades for it and I am going to be buying from more than likely evike or ASGI... But if you guys can find a select store that will not break the bank and has many mp5 internal upgrades than be my guest and suggest it.

A good motor.
This is almost neccesary down the road as every MP5 I've ever had, the motor has failed on me. In any case ROF is important in an MP5. Systems makes good motors of course

if you put a systema motor in an E1 MP5 you will have great ROF, for about a minute.....by then you wont haver a GB any longer....

I would drop in the Eagle Force Hummer, they deliver a super ROF, cheaper than the Systema, and not such elctricity pigs, also leaves a good chunk of cash left over for other upgrades,

TB Inner Barrel, Bore-Up set, Hop-Up Buckling/Nubbing, and so on, but that is all based on how far you want to tune,

As a rule, I wouldn´t take an MP above the M120 Level, so a Motor and a Bore-up kit would be all the tuning required.

well as of now, right when i got it, it was shooting 430 stock hah im guessing it has leveled out a bit to the high 300's or lower 400s
they must already have a high powered spring in it

Well if you are satisfied with the accuracy, and just want to up your ROF, a better motor and Larger battery is all you really need.

yah good easy way to upgrade ROF is a bigger, nicer battery. That and a motor and if your feeling fancy high ROF gear set.