GrovTec GTHM372 Alignment Rod .223/5.56 Suppressor to Barrel - 15" O1 Tool Steel

The GrovTec GTHM372 is a precision suppressor-to-barrel alignment rod built for .223 Rem, 5.56x45mm NATO rifles. The 15" rod is machined from ground O1 tool steel and finished in black oxide for durability and corrosion resistance.

Used during suppressor installation, the rod is inserted into the barrel and through the suppressor to verify concentric alignment between the bore, thread adapter, and suppressor body. Because the rod closely represents the actual bullet flight path, it quickly reveals any runout or misalignment that would otherwise cause baffle strikes, accuracy loss, or suppressor damage. It is a simple, inexpensive tool that should be used any time a suppressor is mounted to a new host or after a barrel, thread adapter, or suppressor change to confirm everything is concentric before live fire.