Pentax 3x-9x 40mm Pioneer II Scope 3x-9x 40mm riflescope with durable 1-piece, 1-inch tube construction Fully multicoated optics with PentaBright technology produce sharp, clear images Nitrogen-filled housing prevents internal fogging of optical elements Waterproof exterior handles inclement weather; 3.1 to 3.8 inches of eye relief Quick-focus eyepiece; includes Penta-Plex reticle; weighs 13 ounces