For AEG MP5 are ambidex. If you use the mag release like an AK. However, the select fire switch usually break easily on the right side (IMO and MY experience). You don't need to pull the bolt so it's ambidex.
And really, do you really think you're going to play with a 'Real handicap' other than a pistol for fast reload (slide catch) any AEG work fine as soon as you pull the trigger.
Your question sound a bit too fast without a bit of research. I'm right ?
Edit : Hope it's not too cold. and sorry i'm french !