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Free Tools

Gun Tools & Calculators

Practical, free tools that run right in your browser — for the range, the reloading bench, and the gun-store debate. No login, no nonsense.

Legal & Law

CCW Reciprocity MapSee which states have permitless carry and how concealed-carry reciprocity works — pick your state to start.

Ballistics

Twist Rate StabilityWill your barrel stabilize that bullet? Compute the Miller stability factor for any twist and load.Recoil CalculatorCompare how hard two loads kick — free recoil energy and velocity, with cartridge presets.Caliber ComparisonCompare cartridges side by side — velocity, energy, recoil, range, and typical use.Muzzle EnergyKinetic energy, power factor, and momentum from bullet weight and velocity.

Optics & Zero

Group Size / MOATurn a group measured at any distance into MOA and MIL — see how accurate your rifle really is.MOA / MIL ConverterConvert MOA to MIL, and turn a point-of-impact correction into exact scope clicks at any distance.

Buying

Ammo Cost-Per-RoundCompare ammo deals instantly — normalize box prices to true cost per round, shipping included.Reloading CostAdd up component costs to see your true cost per reload — and what you save vs. factory ammo.

Find Your Gun

Gun Finder QuizAnswer a few questions about your needs and get matched to the right guns for you.

Legal & Valuation

Powered by the Gun ecosystem — one login across all six sites.

CCW Reciprocity & Gun Laws ↗Where your permit is honored + state-by-state firearm laws, on Gun Transfer.Free Gun Valuation ↗What's your firearm worth? Instant value estimates on Gun Price.Legal Transfer & FFL Help ↗Do a transfer the right way — Gun Transfer walks you through it.Stolen-Gun Check ↗Check a serial number before you buy, on Gun Clear.Marketplace ↗Buy and sell with the community on Gun Share.Your Digital Vault ↗Track your collection, serials, and docs on Gun Vault.