Geissele Automatics MK3 Rail: Benchmark Set
This guide details the installation of the Geissele Automatics MK3 rail on an AR-15 pistol build. It highlights the rail's unique features, including its lightweight design with relief cuts, QD points, and an innovative attachment system for accessories. The installation process involves securing the barrel nut, attaching the rail to the receiver, and then mounting rail sections using captive multi-nuts.











