DoubleStar DS-4 AR-15/M4 Flattop Upper Heavy Match Barrel 16 inch 5.56/.223 1-9 Twist A1 Muzzle Device Black

DoubleStar DS-4 AR-15/M4 Flattop Upper Heavy Match Barrel 16 inch 5.56/.223 1-9 Twist A1 Muzzle Device Black. 5.56 Nato 1.9 twist M4 Feed Ramps Forged upper Specifications for DoubleStar DS-4 AR-15/M4 Flattop 16" Upper Receiver: Manufacturer: DoubleStar Caliber: 5.56x45mm NATO .223 Remington Overall Length: 16 in Barrel Length: 16 in Barrel Profile: M4 Barrel Twist Rate: 1-9 Muzzle Device: A1 Finish: Anodized Color: Black Gun Model: M4 AR-15 Fabric/Material: 7075-T6 Aluminum Gun Make: AR Platform Barrel Material: 4140 Chrome Moly Vanadium Magazine Included: No Package Contents: DoubleStar DS-4 AR-15/M4 Flattop 16" Upper Receiver The DoubleStar DS-4 AR-15/M4 Flattop 16" Upper Receiver is a quality addition to the DoubleStar lineup. For more great deals on AR15 Upper Receivers by DoubleStar please browse our Doublestar Gun Parts page. What firearm models does the manufacturer say DoubleStar DS-4 AR-15/M4 Flattop 16" Upper Receiver is compatible with? The manufacturer says that DoubleStar DS-4 AR-15/M4 Flattop 16" Upper Receiver is compatible with AR-15 M4DoubleStar ARBU404: DS-4 AR-15/M4 Flattop Upper Heavy Match Barrel 16 inch 5.56/.223 1-9 Twist A1 Muzzle Device Black