The M2-B has a Picatinny style rail positioned well below the iron sight axis, making this the lowest optic mount available for the AK. With a tubular sight mounted low, you will be able to use your optic without a comb riser and still use your regular hold. The system allows for co witnessing (the ability to use your iron sights right through a 1x sight as a back-up sighting system) when used with a tubular reflex sight. This heavy duty mount replaces the original steel gas tube and upper handguard, so it adds less than one ounce to the weight of the rifle, making it by far the lightest optic mount installation in the world. The forward positioning of the optic gives you faster, easier a Mfg: Ultimak SPECS: Scout Mount - 6061-T6 hard anodized aluminum, 4140 steel mounting clamps, matte black. 6.7" (17cm) long. Fits 7.62x39 caliber rifles that have original gas tubes with side gas port holes as found mostly on Chinese AKs.