Steve Jackson Games
SKU: SJG37-0167
Any Gun You Can Find
GURPS promises "Anything You Want. Any World You Can Imagine." That includes firearms, which are so numerous in the real world that there's no way one supplement (or even a series) could describe them all! Historical rarities, obscure prototypes, the output of thousands of factories, new models appearing daily, and custom weapons from gun shops and shooters' basements . . . something would always be missing.
For reasonably common types of weapons, you might decide, "They don't differ enough to matter in a game. Use stats for a similar one." However, that won't work for firearms with few – or no – examples in the GURPS library. Nor is it a satisfying answer for those playing gunslingers who are defined by the fact that they wield rare antiques, prototypes, or custom jobs that do differ enough to matter.
GURPS Gun Stats to the rescue! If you can find or estimate a weapon's real-world data – barrel length, caliber, action, projectile length, muzzle velocity, weight, etc. – then this system lets you calculate stats consistent with those of weapons already found in the game. There are also guidelines on guessing missing details, and generic values that suit weapons of the same TL and role. And it all works for anything that shoots projectiles out a barrel using propellant charges at TL4-8, from derringers to heavy artillery.
GURPS Gun Stats requires the GURPS Basic Set, Fourth Edition. GURPS Low-Tech (at TL4) or GURPS High-Tech (at TL5-8) is recommended.