Bushmaster 0040004BLK M4 Patrolmans Complete Upper 5.56x45mm NATO 16 in CMV Nitride Barrel, Black, Aluminum Rec, Drop-In Handguard, A2 Flash Hider, Carry Handle, A2 Front Sight, Carbine Length Gas, Fits AR-15

The M4 Patrolman's upper features a 116" barrel with A2 birdcage-type flash hider, 7075-T6 forged A4 flat top receiver with detachable carry handle, carbine length gas system and M4 style handguard.

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Handguard Finish:	Black
Muzzle:	A2 Flash Hider
Barrel Finish:	Black Nitride
Barrel Length Range:	16" to 16.99"
Type:	Complete
Gun Platform:	AR-Style
Series:	Complete Upper
Twist:	1:7"
Firearm Fit:	AR-Platform
Receiver Finish:	Black
Handguards:	M4 Double Head Shield
Thread Pattern:	1/2"x28
Caliber:	5.56x45mm NATO
Sights:	A2 Front/Carry Handle Rear
Barrel Length:	16"
Receiver Material:	7075-T6 Aluminum
Model:	M4 Patrolman's