Hammers 3-9x40AO Air Rifle Scope with One-Piece Mount Variable 3x-9x power and 40mm parallex adjustable objective. Wire reticle. Standard 1inch one-piece main tube. Fingertight windage/elevation adjustments. Internally reinforced to stand the unique shocking from piston type high power air rifle. One piece airgun mount with 4 clamping screws plus built-in removable stop pin helps the scope to stay in place against powerful shocking during shooting. Integral rings for better alignment of the scope. Fits onto 3/8 & 11mm dovetail rail or groove on top of the receiver. Anodized black matte finish. Overall Length: 13 1/2.