31450- CHARTER ARMS AR-7 EXPLORER SURVIVAL 22 LR. RIFLE. This rifle is in excellent condition with very little use. Everything locks up tight whether assembling or disassembling. Charter Arms manufactured AR-7s from 1973 to 1990 and the serial number is "A162xxx". Stock is in great condition with very little wear. All threads are very crisp and every part screws in nice and tight. Barrel, receiver, and magazine all fit in stock well and butt pad holds them all in securely.