[PAR] [TLE] Colt AR-15 [SEP] The Colt AR-15 is a lightweight, 5.56×45mm, magazine-fed, gas-operated semi-automatic rifle.  It was designed to be manufactured with the extensive use of aluminum alloys and synthetic materials. [PAR] [TLE] AR-15 (disambiguation) [SEP] AR-15 most commonly refers to the Colt AR-15, a line of semi-automatic rifles manufactured by Colt, based on the United States military M16 rifle.
[PAR] [TLE] Colt AR-15 [ SEP ] The Colt AR-15 is a lightweight , 5.56×45 mm , magazine - fed , gas - operated semi - automatic rifle . It was designed to be manufactured with the extensive use of aluminum alloys and synthetic materials . [PAR] [TLE] AR-15 ( disambiguation ) [ SEP ] AR-15 most commonly refers to the Colt AR-15 , a line of semi - automatic rifles manufactured by Colt , based on the United States military M16 rifle .
What rifle is the basis for the the magazine-fed, gas-operated semi-automatic rifle designed to be manufactured with the extensive use of aluminum alloys and synthetic materials?
What rifle is the basis for the the magazine - fed , gas - operated semi - automatic rifle designed to be manufactured with the extensive use of aluminum alloys and synthetic materials ?
United States military M16 rifle
United States military M16 rifle