DPMS AR-15 A3 Flat-Top Upper Assembly 5.56x45mm NATO 1 in 9" Twist 20" Barrel Chrome Moly Matte with A2 Handguard, A2 Front Sight

Product #: 120468 DPMS #: BA-A3AS-20P UPC #: 8445100159
$454.99

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Product Information

This DPMS A3 AR-15 Upper Receiver Assembly comes fully assembled and ready to install on any standard small pin, mil-spec lower receiver. Perfect for those wanting to build a full length 20" rifle to harness its increased velocity and sight radius benefits, this Forged 7075-T6 Aluminum A3 upper's Flat-Top Picatinny Rail also provides maximum versatility in terms of a shooter's preferred sighting arrangement. Carry handles, fixed or flip-up rear iron sights, variable power or red dot optics are all compatible and interchangeable at the shooter's option.

This upper comes equipped with a 20" Heavy Barrel machined from 4140 Chrome Moly Steel, a true 5.56x45mm NATO chamber for use with either commercial or higher pressure military surplus ammunition, and a versatile 1 in 9" rifling twist that is capable of stabilizing light- to medium-weight bullets of up to about 69 grains. Additional features include full length A2 polymer handguards with heat shield, a forged A2 front sight assembly, bolt carrier group, charging handle, forward assist, shell deflector, ejection port door and target crown.

NOTE: This upper assembly comes without a bayonet lug and lacks muzzle threading for legal compliance in states where such features are restricted.

Technical Information
  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 20"
  • Barrel Contour: Heavy (HBAR)
  • Barrel Material: 4140 Chrome Moly Steel
  • Muzzle Thread Pattern: None, Target Crown
  • Chrome Lined: No
  • Barrel Finish: Parkerized
  • Twist Rate: 1 in 9"
  • Chamber: 5.56x45mm NATO
  • M4 Feed Ramps: Yes
  • Muzzle Device: N/A
  • Gas System Length: Rifle
  • Gas Block Diameter: 0.750"
  • Handguard: 2-Piece Polymer, A2-Style w/Heat Shield
  • Sights: Modified A2 Front (No Bayonet Lug), No Rear

NOTE: All DPMS upper receivers are factory test fired for functionality before shipment.

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