M_P

The Pmags are identical internally, a magazine shell isn't going to effect anything.

Flex, if you aren't comfortable faffing around inside your guns then a gas gun isn't for you.

Upgrade parts to increase longevity aren't for the benefit of people who don't want to have to fit parts themselves, it's for the people with more money to burn who would rather just have to replace things less frequently.

yeah^^ I will watch plenty of videos, but nothing compares to getting first hand experience. I reckon I will buy a cheap g39c and then use that until I get comfortable, I'm fine with aegs, always having to fix my mates guns but never really done anything to a gbb.

You're probably better off getting a WE pistol first. Learning how that works fixing it when it breaks, taking it apart and putting it back together etc.