The T68 Firestorm AK47 paintball marker is one of the most awesome guns available right now.  This is a well-built, extremely durable paintball marker that's an excellent replica of the classic 'bad-guy' gun.  You can also upgrade to an electronic trigger giving you the options of semi-auto, 3-round burst or fully automatic.  Other popular options that fit this very realistic tactical paintball gun are Red Dot Scopes (or any scope for that matter) or grenade launchers.  Warsensor also makes a very reliable and realistic AK47 and there are fantastic upgrade kits available to turn your Tippmann 98 or A5 into nice looking AK47 paintball guns as well.  If you like realistic AK47 paintball guns, check out the Tippmann A5 and T68 Krinkov; they're bad to the bone!