Forensic Firearm Labs, like the one pictured to your right, require fully modular weapon storage as they store a vast library of weapons.
The ability to mix and match varying height and style weapons side by side allows forensic scientists to store their inventory with universal components that adjust to the weapon, controlling the front and back of the weapon buttstock and preventing lateral movement while being stored.
Vault space and quantity of weapons being stored determines whether forensic firearm storage can be accomplished with fixed weapon shelving or if mobile carriages are needed.