During boresight verification, the A-Gunner installs the M154 on the dove tail mount.

During boresight verification, the A-Gunner installs the M154 on the dove tail mount.

• A. False
• B. Not sure
• C. N/A
• D. True

Answer: (D)

Boresight verification aims to ensure the gun’s bore axis exactly matches the vehicle’s defined reference line so that aiming and firing are accurate. During this procedure, the A-Gunner mounts the M154 on the dove-tail mount because that interface places the verification instrument in the same plane and offset as the gun’s bore, providing a stable, repeatable reference. The M154 gives the optics and alignment cues needed to compare the actual bore direction with the reference and to fine-tune the sighting system accordingly. Mounting it any other way would introduce height, angle, or lateral errors, making the verification unreliable. So using the M154 on the dove-tail mount is the correct setup for boresight verification.

Boresight verification aims to ensure the gun’s bore axis exactly matches the vehicle’s defined reference line so that aiming and firing are accurate. During this procedure, the A-Gunner mounts the M154 on the dove-tail mount because that interface places the verification instrument in the same plane and offset as the gun’s bore, providing a stable, repeatable reference. The M154 gives the optics and alignment cues needed to compare the actual bore direction with the reference and to fine-tune the sighting system accordingly. Mounting it any other way would introduce height, angle, or lateral errors, making the verification unreliable. So using the M154 on the dove-tail mount is the correct setup for boresight verification.