Bushmaster M4 Patrolman Upper | 5.56 NATO | 16in | 0040004BLK

The Bushmaster M4 Patrolman complete upper assembly is an AR-platform upper built for duty-style and practical use. It is chambered for .223 Rem/5.56 NATO and uses a 16 inch M4-profile barrel with a 1:7 twist and a carbine-length gas system. The assembly includes a flat-top receiver and a detachable carry handle for iron-sight capability.

Product Specifications

• The product type is Complete.
• The caliber is .223 REM/5.56 NATO.
• The barrel length is 16 inches.
• The barrel type is 4150 Steel.
• The rate of twist is 1:7.
• The barrel is described as an M4 Profile.
• The muzzle feature is an A2 Flash Hider.
• The thread pattern is 1/2″-28 tpi.
• The gas system is a Carbine Length Gas System.
• The bolt carrier group is a SBN MPI Bolt Carrier.
• The receiver material is 7075-T6 Aluminum.
• The receiver type is Flat Top.
• The overall length is 25 inches.
• The finish is Salt Bath Nitride.
• The UPC is 604206918222.

This upper pairs with standard AR-platform lowers for a straightforward upgrade or build. Its 16 inch M4-profile barrel and carbine gas system make it well suited for range training and patrol/field-style use where a balance of maneuverability and ballistic performance is desired.