DPMS AR-15 AP4 A3 Upper Receiver Assembly 5.56x45mm NATO

Product #: 338432 DPMS #: BA-AP416 1x9 UPC #: 884451000655
$513.99
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Product Information

This DPMS AP4 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 searching for a lightweight, economical upper configuration with the styling of the military's M4 carbine, 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, including fixed or flip-up rear iron sights and/or virtually any rail-mountable optic.

This upper comes equipped with a 16" M4 Contour 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 a Carbine-Length gas system, forged A2 Front Sight Assembly with bayonet lug, 2-Piece Glacierguard Handguards, complete bolt carrier group, charging handle, forward assist, shell deflector, ejection port door and A2 Flash Hider.

Technical Information
  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: M4
  • Barrel Material: 4140 Chrome Moly Steel
  • Muzzle Thread Pattern: 1/2"-28
  • Chrome Lined: No
  • Barrel Finish: Parkerized
  • Twist Rate: 1 in 9"
  • Chamber: 5.56x45mm NATO
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Gas System Length: Carbine
  • Gas Block Diameter: 0.750"
  • Handguard: 2-Piece Polymer Glaciergaurd
  • Sights: A2 Fixed Front, No Rear

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.

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