If you're playing airsoft, you're going to need one of these! That said - don't rush out and buy a two-tone gun on day one (you've got a very limited selection) unless you're desperate to play with your own kit. You're much better waiting out those first two months to get your valid defence sorted out with the site and then you can buy whatever you want (18+ only). Once you're at that point, there are literally hundreds of airsoft guns in just about every conceivable style. By far the most common style is an M4 or similar, but you can get just about anything, right the way through to the Star Wars E11 Blaster from S&T.