Martinsburg, Missouri — Martinsburg is a city located in Audrain County, Missouri, established in 1857 and named after its founder, William R. Martin. Situated in the mid-Missouri region, the community sits along the Osage River and serves as a local hub for residents in this rural county.This page organizes FFL dealer listings associated with Martinsburg, Missouri within the directory’s location hierarchy. Visitors can keep browsing focused on the named place, move through its surrounding geography, and open individual listings for record-specific information. The page remains centered on the location itself while the catalogue can change independently. Use the hierarchy to return to broader place pages or continue toward a more specific community. Each step keeps the browsing path anchored to a named place and its surrounding geographic context.