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The DPMS Oracle AR-15 Upper Receiver Assembly comes completely assembled and ready for installation on any standard small pin, mil-spec lower receiver. The Oracle is an excellent entry-level upper assembly that incorporates the versatility of the A3 Flat-Top configuration in selecting a preferred sighting arrangement with a solid, fully functional foundation of quality components. Add to that an attractive price and the Oracle becomes the ideal candidate for shooter customization and/or for assembling a lightweight, fast handling, general purpose carbine that won't break the bank.

The Oracle features a 16" Light Contour "Pencil" Barrel for reduced weight, a true 5.56x45mm NATO chamber for use with either commercial or mil-spec ammunition, and employs the versatile 1 in 9" rifling twist rate capable of stabilizing a wide selection of different bullet weights. The upper comes equipped with heat resistant GlacierGuard polymer handguards, single rail gas block, ejection port door, forward assist, shell deflector, charging handle, complete bolt & carrier assembly, and an A2 flash hider. Aluminum parts are hard coat anodized to mil-spec, steel parts are manganese phosphate treated (parkerized) matte black.
Technical Information

  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: Lightweight
  • 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: DPMS GlacierGuard 2-Piece Polymer
  • Sights: None
  • Bolt Carrier Assembly Included: Yes
  • Bolt Carrier Type: M16 Bolt Carrier
  • Extras: Single Rail Gas Block
  • Oracle comes with ejection port door, forward assist & shell deflector


AR-15, Issue:11, Page:003
Big Book Catalog, Issue:70, Page:003

SPECS: Receiver - aluminum, anodized and Teflon® coated, black. Oracle – 16” 4140 chrome-moly 1-9 barrel, 5.56x45mm chamber, A3 upper, A2 flash hider.Chrome-lined barrels are available only by special order.

DPMS - UPPER RECEIVER ORACLE BARREL ASSEMBLY

Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Black

Style: Complete

Length: 16

Twist: 1-9