The 3x25 CQB is one of the most rugged tactical optics on the market. The small scope features a heavy duty body with picatinny rails, German glass, IOR's CQB horseshoe illuminated reticle and 1/4 MOA clicks! Designed for the M4, the optic aligns perfect with the shooter's line of sight. Not too high or too low as seen frequently on the AR15/16 style rifles. The scope can also be fine tuned to the weapon with it's 1/4 MOA adjustments. Note that this unit will only mount on picatinny rails- i.e. M4 and AR15 flattops. The scope will not fit on weaver bases. The new 3x25 compact tactical scope is IOR's first model designed especially for AR15/M16-series weapons. Its integral flat-top base offers out-of-the-box compatibility with M16A3s and M4 carbines, and it attaches directly to any mil-std. 1913 Picatinny rail for use on a variety of other weapon systems as well. The 3x25 tactical scope is not caliber-specific; It's 1/4 min. adjustment system provides precise windage and elevetion corrections on small arms in most sizes and calibers. The 3x25 tactical scope features a fully-illuminated reticle for day/night use as well as a uniqe, 3-position, detachable Picatinny collar for mounting lights, lasers and other accessories. Other features include: Waterproof Fogproof Shockproof 30mm tube diameter Superior optical glass by Schott Glasswerk, Germany Photo-engraved rangefinding reticle Battery powered illumination system with 7 intensity settings Full multicoating and Mc-7 anti-reflection treatment eliminating glare and maximizing light transmission Dural alloy housing, "O" ring sealed and nitrogen filled Finger-adjustable knobs