Kel-Tec RFB 7.62MM/.308 "Extended" Precision Top Picatinny Rail - by Hi-Tech Custom Hi-Tech's RFB 7.62mm/.308 Extended Precision Top Picatinny Rail Replaces the shorter stock rail that is not Mil-Spec with our precision machined Extended Top Rail. Longer than the original top rail. Hi-Tech's 13.25" long vs original 9 7/8" (NOTE: Will NOT fit RDB rifles) HI-TECH'S Top Rail Weighs: 5.2 oz. vs.. Hard Flat Black Stealth Finish with Laser engraved T-Slot numbering. Gives you longer distance between front/rear BUIS's which is critical for accuracy and allows you to install MBUS sights along with Red Dot Optics. FOR MORE KSG ITEMS REMOVED BY AMAZON, PLEASE VISIT OUR WEB SITE.