Colt AR-15-A4 AR6720 Lightweight LE Carbine
Colt AR-15-A4 AR6720 Lightweight LE Carbine. AR-15 A4 Lightweight LE Carbine 5.56mm 16 Inch Barrel 30 Rounds. Comes standard with an optics ready rail and Magpul flip-up rear sight which has adjustment for both windage and elevation. 16.5-inch standard weight barrel and bolt are magnetic particles tested after proofing by Colt to ensure they are made of perfect steel with zero flaws. 1:7 inch twist gives the barrel flexibility to use a wide range of ammunition from 40-grain varmint rounds to 77-grain long range match. The new roll mark of AR-15 A4 recognizes Colt’s newest designation of an optics-ready carbine.
The AR6720 features a 16.1″ light barrel with a 1:7 twist, a flattop receiver with an optics-ready rail, Magpul MBUS Gen 2.