If you've found yourself wishing that the traditional AR platform had more power, your ship has come in. The Colt MSR Carbine Semi-Auto Rifle delivers the enhanced power and performance of AK's 7.62x39mm round in a classic AR-15. Colt AR-15s have been extensively duty-tested by the world's most elite military and law enforcement personnel, delivering the highest level of performance and reliability in the line of duty. Using the proven LE6920 as the baseline, the MSR Carbine features a barrel with A2 flash hider and 1:12 twist, heat shield handguard, A2 front tower, and Magpul MBUS flip-up rear sight. 6-position M4 stock. Includes 1 magazine. Based on the legendary LE6920 Barrel with 1:12 twist and A2 flash hider Heat shield handguard A2 front tower Magpul MBUS flip-up rear sight 6-position M4 stock