While you can tighten the SignGuardian bolt and the "1-Way R screw" using a flat blade screwdriver, you will need this special screwdriver bit in order to loosen the tamper resistant bolt/screw.
While you can tighten the SignGuardian bolt and the "1-Way R screw" using a flat blade screwdriver, you will need this special screwdriver bit in order to loosen the tamper resistant bolt/screw.