gunsnprices turns firearm and ammunition product titles into structured JSON: brand and model (for example Glock 19 Gen 5 MOS), caliber, magazine capacity, barrel length, rounds per box and cost per round.

It uses the model dictionaries and caliber list behind GunsNPrices (https://gunsnprices.com), a price comparison site for guns and ammunition.

Examples:

 gunsnprices "Glock 19 Gen 5 9mm 15rd"
 gunsnprices --price 18.99 "Federal American Eagle 9mm 115gr FMJ 50rd"
 gunsnprices < titles.txt     # one title per line, JSON Lines out

Runs offline: no network access, no account, no data collection.

Code: MIT. Model and caliber data: CC BY 4.0, GunsNPrices (gunsnprices.com). Python library and documentation: https://github.com/gunsnprices/gunsnprices-python