Expands when qualified current and retired law enforcement officers can carry concealed firearms. It adds them to the exceptions under the federal school‑zone gun ban, updates training and qualification rules, and allows carry in certain low‑security federal buildings open to the public.

It clarifies what counts as meeting firearms‑qualification standards, who can certify those qualifications, and lets States extend the qualification window from 12 months to up to 36 months. It also creates a new exception in federal building rules for Facility Security Level I or II public‑access facilities while leaving higher‑security facilities unchanged.