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Questions & Answers
What type of rear sight is included? Is it adjustable for windage? Expert Answer

The Bushmaster M4 Type Patrolmans Flat Top A4 Upper features a steel flip up rear sight that can be adjusted for windage. The front sight is an F-Marked sight base for sight alignment, providing correct carbine sight alignment.

by Ethan, Gear Expert, July 8, 2022
What barrel material? Is it chrome lined? Expert Answer

Bushmaster does not provide details regarding the barrel material or chrome lining for their M4 Type Patrolmans Flat Top A4 Upper. I'd recommend reaching out to them directly for more information.

by Ethan, Gear Expert, September 8, 2022
Caliber: .223 Remington , 5.56x45mm NATO Overall Length: 25 inBarrel Length: 16 inBarrel Profile: M4 Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Threads per Inch: 1/2x28 Muzzle Device: A2 Flash Hider Finish: Salt Bath Nitride Color: Black Gun Model: M4 Gas Block Journal Size-Diameter: .750 inWeight: 5.5 lb

Code: 6C5-UFH-BF7-00-40008-BLK

MPN: 00-40008-BLK

UPC: 604206200259

List: $633.95Save 16%
$531.76

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Product Info for Bushmaster M4 Patrolman's Flat Top Upper Assembly

Introducing the M4 PATROLMAN'S CARBINE FLAT TOP 16 w/Flip-Up Sight Upper Assembly, the ultimate firearm for patrol officers and tactical enthusiasts alike. This top-of-the-line rifle is designed to meet the most demanding requirements, with a 5.56 NATO (.223 REM) caliber that ensures powerful and accurate performance. Crafted with a 16'' barrel made of 4150 CMV material, this rifle boasts a salt bath nitride finish that enhances durability and longevity. The 1:7 twist rate provides superior accuracy, while the ? x 28 barrel thread pitch makes it easy to install a suppressor or muzzle brake. Weighing in at just 4.2 LBS, this rifle is easy to handle and maneuver, making it the ideal choice for those who need to move quickly in tight spaces. It features a carbine-length gas system and a 7075 Forged A4 Flat Top Upper Receiver, which provides a stable platform for mounting optics and other accessories. The M4 PATROLMAN'S CARBINE FLAT TOP 16 w/Flip-Up Sight Upper Assembly also comes equipped with a Midwest Industries Inc. Combat Rifle Rear Flip Sight, an F-Marked A2 Front Sight, an A2 Flash Hider, and a Mil-Spec Charging Handle. And with its premium building materials, you can count on reliable and consistent performance every time.image

WARNING: California`s Proposition 65

Specifications for Bushmaster M4 Patrolman's Flat Top Upper Assembly:

Manufacturer: Bushmaster
Caliber: .223 Remington, 5.56x45mm NATO
Overall Length: 25 in
Barrel Length: 16 in
Barrel Profile: M4
Gas System Length: Carbine Length
Barrel Twist Rate: 1-7
Threads per Inch: 1/2x28
Muzzle Device: A2 Flash Hider
Finish: Salt Bath Nitride
Color: Black
Gun Model: M4
Fabric/Material: 7075 Aluminum
Attachment Type: Sling
Gas Block Journal Size-Diameter: .750 in
Gun Rail: M-LOK
Gun Type: Rifle
Gun Make: AR Platform
Bolt Carrier Group Included: MIL-SPEC
Weight: 5.5 lb
Magazine Included: No

Features of Bushmaster M4 Patrolman's Flat Top Upper Assembly

  • Upper Receiver
  • 7075 Forged A4 Flat Top Upper Receiver Rear Flip Sight
  • Midwest Industries Inc. Combat Rifle Flash
  • A2 Flash Hider Charging Handle
  • Mil-Spec Charging Handle Bolt Carrier Group
  • 8620 Steel SBN Bolt
  • Bolt 9310 MPI Tested Made In

Package Contents:

  • Bushmaster M4 Patrolman's Flat Top Upper Assembly

Bushmaster M4 Patrolman's Flat Top Upper Assembly Orderable Models

List of Orderable Models

  • Bushmaster M4 Patrolman's Flat Top Upper Assembly, 16in, 5.56 NATO/.223 Remington, Black, 00-40008-BLK , MPN: 00-40008-BLK , UPC: 604206200259 , Code: 6C5-UFH-BF7-00-40008-BLK
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