If you want to talk about an advanced tactical weapon, let's start with the SPC. Standard features include: newly designed metal body, 7mm bearing gear box, Armalite Logo, metallic hop-up chamber, metal gears, new receiver pins, and a full RIS (Rail Interface System) with covers. With its large stock, you can push this rifle to 400fps (upgraded) and have plenty of room for the battery that it will require. But, with an assault rifle that is shooting near 325fps right out of the box, your mission may not require it. Easily add a grenade launcher, flashlight, laser or a vertical foregrip. When you have a mission that requires a rifle with power, accuracy and the ability to customize - the SPC is the tactical choice. This is one awesome airsoft gun.