Originally Posted by Desmodus
Siege and Ultimate airsoft have rental guns (usually basic M4's or MP5's) that you can use, but aside from that you'll need to go to a retail shop and hold the guns in person if you are looking to find whats comfortable for you.
I'd also suggest looking at chest rigs with MOLLE on them, you'll probably appreciate the flexibility of being able to configure the pouches exactly how you want them.
Yeah, I'll try to head over to a retailer when I get some time this week. Also, funny enough, my backpack (5.11 Tactical 3 Day Rush) is MOLLE, so I know and appreciate the system. The amount of stuff I can attach to it is stupid.