Originally Posted by L473ncy
MP5 will be a bit harder to find since everyone usually goes with the AR or AK platform when starting out. Doesn't mean that there doesn't exist some MP5's there, IIRC they have 2 on consignment right now (both pretty decent starter packages at decent prices).
As far as a ammo/mag limit goes, regular skirmish days, anything goes but try not to be a BB hose or you'll drain your batteries fast.
Pistol wise, I've only really gotten like 3 pistol kills in my entire time playing airsoft and only pulled out my pistol maybe 10-15 times but that's mainly because I tend to engage at longer distances (at least 50-60 feet) and only pull out a pistol when I'm engaging below my Minimum Engagement Distance for my rifle.
Also I'll echo the "buy a few pieces at a time" sentiment. I did it that way and am starting to amass a collection of gear that I like and not useless stuff that I use once and put in the back of the closet forever or go and sell it after one use.
I'm about the opposite. I've got a rifle, a submachine gun, and a shotgun. I've gotten maybe 10 kills between all three. On my pistol, I've gotten at least three times that easily. @ Coward It has little to do with the gun, I think, and more to do with your style and the environment to play in. Obviously you don't get many chances to break out a bolt-action rifle in indoor Toronto. Maybe check out your local fields and see what the other people are using. I have no idea what they're running where you live.