I use an IKEA Pax wardrobe, It’s still a work in progress but it’s holding, so far, two carbines, two long rifles, and 5 pistols all in individual soft cases. It also holds my ammo, gas tac gear and maintenance and cleaning kits.
I have added a fingerprint lock and intent to and more ‘mods and upgrades’. I’m thinking of using the back of the door to add magazine storage racks maybe.
I like it because it’s unassuming, blends in with other furniture and endlessly customisable.