This paper model is a full size Bottlecap Mine, a craftable landmine in the Fallout 3 video game series, the papercraft was created by Brokensoul. It does five times the damage of a standard frag mine.
Bottlecap mines are constructable by the player, using the bottlecap mine schematics. Building it requires a lunchbox (container), 10 caps (shrapnel), a sensor module (firing device), and a cherry bomb (explosive). Locating additional schematics allows you to build more bottlecap mines at a time. Like other landmines, they need to be armed and placed to be used. Unlike other mines, they are larger, have a bigger warning, and make a much larger explosion. They also, accordingly, take a bit longer to arm and drop.
Like normal frag mines, the bottlecap mine can be planted onto an enemy or NPC to kill them, though it is perhaps an unwise and unnecessary idea, considering their explosive radius. [Source: wikia]
You can download the papercraft model template here: Fallout 3 - Full Size Bottlecap Mine Free Paper Model Download