Idaho sole proprietorship DB Design Works released 3D-printable files that convert original Shield parts kits into functional firearms, adapting an FMDA Gatalog frame and adding Shield Plus magazine compatibility from Uberpoor. They are solely for lawful personal use by people not barred under federal law including 18 U.S.C. § 922(g) and authorized locally, and are not distributed to California or other prohibited jurisdictions. Users must verify eligibility themselves; files are as is without warranty.