A-5 completely customized not even gonna try to talk about it.
Ion (no customizations)
GTI eforce (none)
maybe a holster
Accurate, charging handle, nice grip
Size, gas, holster, loading.
Overall I love this pistol. Its a little big but its worth it. Mine came with an extreme rage holster. When you enter the co2 cartridge in you can't hear it pierce therefore i didnt know the gun was ready to fire. I got mine for pretty cheap so its worth the money. Loading this thing is not something you can due too quickly but for $60 with a holster its not bad at all. Once I play with it I'll edit the review.
I would get it for the price. If anyoen finds a way to make this thing load quickly I'd like to hear about it.