Armalite AR-180, 5.56mm cal. semi-auto carbine. Serial #S23893, mfg. Sterling, England. Excellent condition. The highly desirable Sterling model with 18" barrel and flash-hider. Black finish is outstanding and 99%. Folding stock. Two flip-up adjustable rear peep sights. Eared front post sight. Vented forearm. Sling swivels. British proofmarks on barrel. Includes original AR-180 marked 20 rd. black steel magazine and two after-markets 30 rd. and 40 rd. Dust cover. Nice collector! Gunrunner West item.