The Gaulois was manufactured from 1895 to around 1912 and operates on a "squeeze fire" action with an internal magazine. It has a single bead sight on the barrel rib which is marked with the company trademark and "GAULOIS", a sliding dust cover marked "No./1", "Cal." and "8 m/m" on top of the frame, the round company emblem on the top of the frame at the rear, a three-position "S/F/D" (safe/fire/unload) safety switch, and a hard rubber plunger pad marked "R" on the left. The barrel, action, and side plate have matching serial numbers. It comes in a paperboard flask case marked "Cognac/Leon Croizet."