Geissele SAG .375 Suppressor Alignment Gage 10‑1639‑F is a precision tool designed to ensure the alignment of a suppressor to the bore of a firearm barrel. Manufactured from hardened steel and ground 0.002” under the nominal bore diameter, this gage helps prevent wear from abrasive powder residue and ensures precise alignment. Its extended length allows for accurate verification of suppressor alignment, which is crucial for maintaining suppressor performance and safety.

• Caliber Compatibility: .375
• Material: Hardened steel
• Ground 0.002” under nominal bore diameter
• Length: Approximately 18 inches
• Designed to verify suppressor alignment before firing
• Made in the USA