Q RAIL-1913-2.6-QSERT Q-Sert 2.6" M1913 Picatinny RailThe Q LLC. Q-Sert 2.6" M1913 Picatinny Rail RAIL-1913-2.6-QSERT is a purpose-built accessory designed for The Fix by Q. This Q RAIL-1913-2.6-QSERT rail allows users to attach a variety of accessories to enhance the versatility of their firearm setup providing a compact and reliable solution.The M1913 Picatinny Rail is an accessory designed for The Q Fix providing a platform for attaching accessories such as bipods flashlights and other enhancements enhancing the firearm's versatility.