A single-shot, break-action shotgun identified as a Harrington & Richardson Topper M48 12 GA. The blued steel barrel and receiver are paired with a wooden forearm. Visible markings include “TOPPER M48,” “HARRINGTON & RICHARDSON ARMS CO.,” and “WORCESTER, MA. U.S.A.,” alongside “MADE IN U.S.A. 12 GA. CHOKE” and a serial number “T 18027.” The buttstock is absent, leaving the rear tang and spring mechanism exposed.