Bushmaster AR-15 Patrolman M4 A3 Upper Receiver Assembly 5.56x45mm NATO

Product #: 241847 Bushmaster #: 91822 UPC #: 604206918222
Save $80.00 (13%)
Sale expires 08/25/2014
Ships today from MidwayUSA

Please Sign In to use this feature.

Product Information

This drop-in A4 upper will attach to virtually any standard AR-15 lower receiver. Comes complete with dual flip rear sight in a removable carry handle, charging handle, forward assist, ejection port cover, bolt and bolt carrier assembly. With a 1 in 9" twist, the 16" chrome lined barrel provides outstanding accuracy that has been enjoyed by competition shooters worldwide. Pre-ban style upper includes a bayonet lug and flash hider. Also features a removable carry handle turning the upper into a versatile flat top for mounting optical devices or accessories.

AR-15 Hammer and Trigger Pin Dimensions:
  • Some Colt® AR type rifles have been manufactured with hammer and trigger pins and holes which are approximately .176" in diameter. These are referred to as "large pin" Colts. This was done to eliminate the chances of someone putting M16 fire control parts into an AR receiver. This is not found in all Colt models, just some.
  • All other AR type rifle manufacturers have stayed with the .156" diameter hammer and trigger pins and holes, or "small pin" which is the same spec used in all military M16 rifles.
  • Measure your pins or the holes in your lower receiver to determine if you have a "small" or "large" hole Colt® AR

    Technical Information
    • Upper Receiver: A3 Flat-Top
    • Barrel Length: 16"
    • Barrel Contour: M4
    • Barrel Material: 4140 Chrome Moly Matte
    • Muzzle Thread Pattern: 1/2"-28
    • Chrome Lined: Yes
    • Barrel Finish: Chrome Molly Matte
    • Twist Rate: 1 in 9"
    • Chamber: 5.56x45mm NATO
    • M4 Feed Ramps: Yes
    • Muzzle Device: Flash Hider with Bayonet Lug
    • Gas System Length: Carbine
    • Gas Block Diameter: 0.750"
    • Handguard: 2-Piece M4 Style
    • Sights: F-Marked Fixed Front, Dual Flip Rear with Removable Carry Handle

    Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.

  • Was this information helpful? Yes No

    Thank you for your opinion. We appreciate your input!

    Please Help Us Improve

    Please enter the missing required fields:

      Please describe why the information was not helpful.

      *Indicates a required field

      Know someone who may like this? Email this Page to a Friend

      Customer Reviews

      The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.

      NOTE: Prices, specifications and availability are subject to change without notice.
      We reserve the right to correct typographic, photographic and/or descriptive errors.
      Recently Added
      Suggested Products