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Alexander Arms AR-15 A3 Entry Upper Assembly With Millennium Compensator 50 Beowulf 1 in 20" Twist 16.5" Barrel Matte with Mid-Length Handguard, 7-Round Magazine
Alexander Arms AR-15 A3 Entry Upper Assembly With Millennium Compensator 50 Beowulf 1 in 20" Twist 16.5" Barrel Matte with Mid-Length Handguard, 7-Round Magazine


 
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Our Price: $899.00

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Product Code: 50MILLENNIUM
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Description
 
This Alexander Arms AR-15 Entry Upper Receiver comes fully assembled and ready to install on any standard small pin lower receiver. Chambered for the awesome 50 Beowulf cartridge, this upper squeezes 50 Caliber firepower into a standard AR-sized envelope, offering shooters an immense step up the power scale compared to a traditional 223 Remington. An excellent choice for close- to medium-range hunting or home defense, the Entry Upper's short 16.5" Barrel keeps it compact and maneuverable in tight spaces, as well as reasonably lightweight. Features include a Forged 7075-T6 Aluminum Flat-Top Receiver for adding optics and/or iron sights, 2-Piece Mid-length Polymer Handguards, a Picatinny Rail Gas Block, complete bolt carrier group, charging handle and one 7-Round Magazine.

Threaded Millennium Compensator
Characteristics: The Millennium compensator differs from the other .50 Beowulf® muzzle brakes in that it produces not only a braking effect, but also a distinct downward force to counteract the muzzle flip of the weapon. The design uses a series of four compound angled slots on each side of the unit to redirect gas in a backward and upward direction. The combined effect of recoil reduction and muzzle jump reduction works very well on the .50 Beowulf® and allows for rapid follow up shots. Back blast is noticeable from this unit.



This upper comes equipped with a Forward Assist and Brass Deflector Only. For increased reliability, the ejection port has been enlarged in order to give the larger 50 Beowulf cartridge cases room to eject. As modified, this upper does not accommodate or include an ejection port door.

Barrel diameter under the handguard is 0.980", tapering to 0.907" under the gas block, and finally tapers down to 0.775" at the muzzle. The Single Rail Gas Block is proprietary to the barrel's unique 0.907" Outside Diameter.

Due to the 50 Beowulf's recoil, use of a Fixed Stock or Durable Collapsible Stock such as a MagPul UBR or ACE Hammer is recommended.


Technical Information:
Upper Receiver: Modified A3 Flat-Top (No Ejection Port Door)
Barrel Length: 16.5"
Barrel Contour: Heavy, Tapered
Barrel Material: Chrome Moly Vanadium Steel
Muzzle Thread Pattern: None
Chrome Lined: No
Barrel Finish: Parkerized
Twist Rate: 1 in 20"
Chamber: 50 Beowulf (12.7x42mm)
M4 Feed Ramps: No
Muzzle Device: None
Gas System Length: Mid
Gas Block Diameter: 0.907"
Handguard: 2-Piece Polymer w/Heat Shield, A2-Style
Sights: None
Extras: Single Rail Gas Block, 7-Rnd Magazine
Weight: 4.45 lbs
Upper does NOT have an ejection port door


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