Alexander Arms AR-15 Entry A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
- 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
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: 50 Beowulf Compatible Carrier
- Extras: Single Rail Gas Block, 7-Rnd Magazine
- Weight: 4.45 lbs
- Upper does NOT have an ejection port door
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