An improvised guide rod assembly for semiautomatic firearms is provided for adjusting the tensile force on a spring internal to the firearm. The assembly included a guide member distending distally from the firearm's forward components, creates a tension in the mechanical workings of the firearm during discharge, and enhances accuracy, bullet velocity, and defensive functionality. A guide rod positions inside a firearm guide channel, protruding outside the firearm from a distal end. The guide member passes through a similarly sized and dimensioned spring. Tension on the spring transfers to an adjacent firearm slide member, whereby during discharge of the firearm, the slide member meets resistance while in motion. Using the adjustable guide rod to realize spring resistance increases, the velocity of a bullet is improved as is control of the firearm after recoil. The guide rod also serves as a close proximity weapon.