16″ 5.56 M4

• Chamber – 5.56MM
• Barrel Profile – M4
• Barrel Twist – 1×9
• Barrel Thread – 1/2 x 28
• Barrel Steel – 4150 CMV
• Flash Hider – A2
• Handguard – Standard 2 piece Carbine Black Handguard
• Gas System – Carbine
• Gas Block -F Marked Sight Tower
• Upper Receiver – M4 Flat Top Upper
• Bolt Carrier Group – Included
• Charging Handle – Included

Mag NOT Included

Warranty: 1 year warranty against manufacturer defect.

***Ammunition Notification*** JSE Surplus test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds. Some of the non-warrantied ammo includes: Tula, Wolf and Perfecta.