Note: edits are not saved to a shared database — they live in this browser only. A database backend is the next step if we proceed.

Stock → Action compatibility comes from the scraped stock inlet tables (see SKU list) and isn't edited here. Fits Actions is the barrel ↔ action join: each barrel line links to action manufacturers and their specific models — check/uncheck models, or use + manufacturer to link another. Where proofresearch.com publishes a per-PN "Action Model" column, SKU-level matching still applies on top. Changes save to this device, apply immediately, and export as JSON.