AirForce has kicked it up a notch with their new baffle system, which makes the Condor SS quieter. The AirForce Condor delivers from 600 fps to a rip-snorting 1300 fps (in .177), and it's recoilless! Accurate (1" at 50 yards) and powerful, this PCP offers extreme flexibility. It has an 18" Lothar Walther barrel (1:16 twist). You can also buy 12" and 24" barrels. Change-outs are easy and don't require any special tools, but the gun will be unsilenced. Built in the USA. NOTE: The .20 cal. pellets are slightly longer than the .22 cal. pellets of the same weight. Therefore, they drag in the barrel a little more and produce lower velocities. The quoted figures (showing the .20 cal. gun shooting slower than the .22 cal. gun) are actual test figures and are correct. You'll need an adapter to fill the reservoir with air. The type of adapter depends on how you plan to fill your gun. A scuba tank will require a different adapter than a hand pump or carbon fiber tank. If you use a hand pump, the type of adapter you need depends on the brand of hand pump you use. Carrying an extra filled tank when shooting in the field is a lot easier than carrying a scuba or carbon fiber tank for refills. There are lots of ways to configure this gun, including rail-mounted accessories (coin-slot screws for each changeout). You can choose the scope, laser, flashlight, night vision equipment, extra tanks, quick-detach fiber-optic sights and attachments for the type of refilling unit you plan to use. If you replace the barrel with a longer one, the gun will not be silenced. The .177-caliber Condor SS has a special tank valve spring. If you plan to attach other caliber barrels to your gun, you may want to buy a tank made for the other calibers (.20, ,22 & .25 calibers use the same tank). If you use the .177-calIber tank with the other smallbore calibers, you'll experience a drop of 50-100 fps in those calibers. However, if you buy the .20, .22 or .25 caliber but plan to also attach a .177-caliber barrel, you must buy a .177-caliber air tank. If you don't, the tank valve spring will not close fast enough, and all your air will be dumped.