...the real weapons would not fit inside a 5"/38 cal. gunhouse. If installed in a gunhouse meant for a 5"/38, the 5"/54 breech is too long to permit any workspace behind it for loading, etc., and if fully elevated, the breech would break through the mount floor.

A new, larger gunhouse is required for that gun, longer to the rear and taller.

Several aftermarket Montana-class 5"/54 cal. mount models are available, including sets from us in popular scales including 1/700 and 1/350.

Twin-gun 5"/54 cal. mounts intended for the Montana-class were never built and despite searches from many researchers, no official plans, drawings or photos of mock-ups of the proposed 5"/54 cal. Mk.41 twin-gun mount's gunhouse are known to exist. Models of the Mk.41 gunhouse are typically theoretical and logical enlargements of the very real Mk.16 single-gun 5"/54 cal. mount fit to very real Midway-class aircraft carriers and later installed in the very real Japanese Akizuki-class and Murasame-class destroyers from 1958 to 1959.

Click here for our catalog which includes our rendition of the proposed Montana-class 5"/54 mounts.