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0.1.0 (2026-11-10)

First release. Elixir port of the gunsnprices Python package 0.1.2, with identical results on the 1,150 recorded store titles of its test suite and on all 63,755 titles of the GunsNPrices catalog.

  • GunsNPrices.parse_title/2: firearm or ammo, brand, model, calibers, magazine capacity, barrel length, rounds per box, cost per round (options brand:, mpn:, sku:, price:, kind:).
  • GunsNPrices.identify_model/2: 50 brands, the same model dictionaries that GunsNPrices uses on its site; decodes Glock part numbers. list_brands/0.
  • find_calibers/1, find_caliber/1, normalize_caliber/1, list_calibers/0, caliber_by_id/1: 293 calibers with retailer spellings.
  • magazine_capacity/1, barrel_length/1, rounds_per_box/1, cost_per_round/2, looks_like_ammo?/1.
  • Result structs GunsNPrices.ProductInfo, GunsNPrices.ModelMatch, GunsNPrices.Caliber encode to JSON (built-in JSON; Jason too when it is present) with the Python package's field names.
  • Pure Elixir on Erlang's :re, no runtime dependencies; the data is compiled in, the rules are compiled on first use (or warm_up/0) and kept in :persistent_term. Requires Elixir 1.18+.