Brownells AR-15 Hammer Drop Block

The Brownells AR-15 Hammer Drop Block is a gunsmithing tool designed to safely lower the hammer on an AR-15 without damaging the trigger group components. It inserts into the lower receiver to protect the firing pin and bolt carrier group during dry-fire and assembly procedures. Compatible with standard AR-15 lower receivers. An essential tool for gunsmiths and armorer work on AR-platform rifles.