In one aspect the invention features a weapon maintenance stand that includes a base plate, a support flange, and a wall structure. The support flange is spaced from the base plate and defines a first plurality holes extending through the support flange. A subset of the first plurality of holes are configured to match a pattern of bolt holes of a deck-mounted weapon system and at least one of the first plurality of holes is configured to receive an alignment structure of the deck-mounted weapon system. The wall structure is attached to the base plate at a first end and attached to the support flange at a second end. The wall structure defines at least one tunnel extending through the wall, with the at least one tunnel being sized to accept umbilical components of the deck-mounted weapons system.