Last night, we posted photos of the airsoft gun/military enthusiasts at Hyper Douraku's venture into maid cafes. In addition to reviewing replica weapons and covering airsoft events, HD's web site has other great gun otaku features. Particularly noteworthy is their must see "Story Time" manga examinations of the hardware featured in movies.
They also have a look at the world history of firearms and explosives
and the HD Platoon - Assault Break web manga