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Direct Impingement Gas System
Adjustable Post Front Sight
M1913 Picatinny Top-Rail
6-Position Adjustable Stock
30-Round 5.56mm NATO Magazine
The Colt Expanse M4 carbine puts a Colt quality AR-15 within easy reach of the modern sportsman looking to enhance his or her collection or the first-time buyer looking for a starting point on which to build their dream modern sporting rifle. The Expanse operates with a direct impingement system and a locking bolt. The 4150 CMV has a manganese phosphate protective finish and a 1 in 7" right-hand twist. The post front sight is adjustable for elevation. Black hardcoat anodized 7075-T6 aluminum receivers. Standard M4 carbine handguard. Collapsible M4 stock. A2 pistol grip. Single stage trigger.