17" 7.62mm Suppressor Alignment Rod

This Geissele Suppressor Alignment Rod is a precision measurement tool designed to verify proper suppressor concentricity with the firearm barrel. The rod assesses multiple alignment factors including centerline offset and angular alignment of barrel threads to bore, perpendicularity of the barrel shoulder to threads, muzzle device internal geometry alignment, and suppressor mounting ID geometry to bore alignment. Measuring 17 inches in length with a 0.297 inch outer diameter, this 7.62mm gauge weighs 0.3 pounds and fits AR-308 platforms universally. Essential for ensuring optimal suppressor performance and barrel harmonics, this tool provides the precision verification necessary for professional installation and troubleshooting suppressor concentricity issues on modern rifle systems.