SIG Sauer engineers and product managers spent two years developing their new ASP20 break-barrel air rifle. Several features set the ASP20 apart and should make it an excellent alternative to a rimfire for hunting squirrels and other small game. The .177-caliber ASP20 produces a muzzle velocity of 1021 fps with an 8.64-grain pellet for 20 ft.-lbs. of energy, while the .22-caliber rifle drives a 14.65-grain pellet to 841 fps at the muzzle for 23 ft.-lbs. of energy. Both the .177- and .22-caliber versions are available with a full-size wood or synthetic stock. The ASP20 does not have sights, but a rail on the receiver makes mounting an optic easy. Learn more about it in the video embedded above. MSRP: $399.99-$489.99.