.177 caliber Benjamin Dual Fuel PCP & CO2 rifle. 0.177" 1000 ft/sec Get into precharged guns at an unheard-of price and also get the accuracy of an expensive European target rifle! Benjamin has bridged the gap and taken the pain out of PCP guns. Not only is this as low a price as you'll ever find on a PCP rifle, but it's so easy to pump up that a wispy teenager could do it! The Discovery has raised the bar for PCP guns because it uses only 2000 psi of air. While the European companies race toward higher and higher air pressures, Benjamin is going the opposite direction and making it easier than ever to use a hand pump. If you want to use a scuba tank or carbon fiber tank, you can do that, too. The Discovery gives you a choice! The gun comes with a magnificent walnut stock made especially for it. It also has Williams fiber optic front and rear sights and a built-in air pressure gauge. When you open your box, you'll see easy-to-follow and easy-to-understand instructions that'll lead you step-by-step. If you're an experienced PCP user, you'll soon see that the Discovery is the easiest PCP you've ever used. If you're new to PCPs, you'll become a pro in just a few short steps. If you want to switch to CO2, that's easy to do. There's a special tool that lets you quickly and safely exhaust all the high-pressure air (or you can just shoot the air out). Attach the optional CO2 adapter (separate purchase), connect it to a paintball CO2 tank and fill 'er up! Now, commence to shootin'! With high-pressure air, you'll get about 35 powerful shots before you need to pump up again. On CO2, you'll get a lot more. 0.177" 1000 ft/sec The Discovery is manufactured and built in the U.S.