The revolutionary First Strike Tiberius T15A1 Carbine airsoft rifle is a first of its kind HPA airsoft rifle with an air on board high pressure system. The First Strike airsoft rifle comes with an included First Strike 400psi 13/3000 Tank/Stock. So there is no need for large air tanks to slow you down, or remote lines to get in the way. The T15 airsoft rifle comes with an efficient mechanical HPA system that has a 650+ shot count per air tank fill. The body is made out of a high grade cast aluminum with a tough Type III anodized finish, and is manufactured to the tightest tolerances. The T15 airsoft rifle also features a robust valve system that is isolated from the striker/bolt assembly. The operator can separate the upper receiver from the lower receiver safely without the need to de-gas the system, i.e. remove the tank/air source. Also, no batteries are required which means the First Strike T15 airsoft rifle is suitable for play in all types of weather. We recommend our Valken SMAG 140rd Mid-Cap airsoft magazines for use with the T15A1 Carbine rifle.