The Colt Expanse M4 Magpul AR-15 Semi Automatic Rifle in 5.56 NATO is built on a forged flat top upper with a carbine-length gas system and a 16.1-inch barrel. It’s finished in hardcoat anodized matte black and comes with Magpul SL components, including a collapsible stock and SL hand guard, for a versatile, modern AR-15 setup.
Key Features
16.1-inch 4150 CMV barrel with 1:7 RH twist
Hardcoat anodized matte black finish for durable, low-glare appearance
5.56 NATO chambering (accepts .223 Remington) for flexible ammo compatibility
Gas-operated, multi-lug rotary locking bolt with a carbine-length gas system
Magpul SL hand guard and Magpul SL collapsible stock with Magpul pistol grip
Forged flat top upper receiver for straightforward optics mounting
A clean foundation for an AR-15 build or an optic-forward upgrade path—this Colt Expanse M4 Magpul AR-15 rifle is ready for the range with factory Magpul fit and finish.
