Gamo 611138054 P-25 Blowback CO2 Powered Air Pistol. The P25 Blowback CO2 powered air pistol is equipped with the Blowback feature. This innovative technique provides a realistic action and an authentic look and feel utilizing a small portion of air to move the slide backward when firing. A rifled steel barrel and textured plastic grip are also features of this new air pistol that is capable of 450 FPS with Gamo's PBA Platinum Pellets. Only standard-skirt pellets should be used with the P-25 Blowback pistols. To avoid damaging your magazine, never use long-skirt pellets, such as: Red Fire, Blue Flame, Glow Fire, PBA Bullet, Magnum, Master Point, Armor, Lethal, Rocket or TS-10. Length: 7.75” Weight: 1.5 lb (0.7 Kg).