Introducing the JL Billet Force Alignment Long Rail for AK-47. JL Billet is proud to introduce the FA-AKR as a "drop-in" replacement for standard AK furniture. The design, features a unique interlocking system to force the top rail into a repeatable position suitable for mounting optics. This patented design eliminates the need for barrel clamps or direct mounting optics to gas tubes. Installs easily, quickly and boasting excellent heat dissipation and repeatability. This rail will fit most stamped AK receivers as is. Features1913 Picatinny top railM-lok Slots at 3,6, and 9'oclock positions6061 T6 aluminumType III hard black anodized coatingLength: 10.25"Weighs is 9.3 oz Hardware6pcs 8-32 x 5/16 flat head screws1pc 8-32 x 3/8 half dog head set screw2pcs 8-32 x 5/8 half dog head set screws Note: As with all AKs some fitment may be required, does not fit KP9.