Development for the Growler began in 1999 by American Growler when the Marine Corps sought a vehicle that could be transported in a V-22 Osprey.
Though the initial design used elements and parts from the drive train of the M151 which it was intended to replace, the final design featured entirely new parts and systems to allow it to fulfill its mission.
This included allowing it to fit within the confines of a V-22's cargo bay.
No major components from the M151 design are used in the manufacture of the M1161 or M1163 variant.
Initial engineering of the M1161 is most closely related to American Growler's commercial UV 100 DB off-road vehicle.
 Manufacture of the Growler variants was later transferred to General Dynamics facilities but are otherwise identical.
Development for the Growler began in 1999 by American Growler when the Marine Corps sought a vehicle that could be transported in a V-22 Osprey. Though the initial design used elements and parts from the drive train of the M151 which it was intended to replace, the final design featured entirely new parts and systems to allow it to fulfill its mission. This included allowing it to fit within the confines of a V-22's cargo bay. No major components from the M151 design are used in the manufacture of the M1161 or M1163 variant. Initial engineering of the M1161 is most closely related to American Growler's commercial UV 100 DB off-road vehicle.  Manufacture of the Growler variants was later transferred to General Dynamics facilities but are otherwise identical.
Growler (vehicle)