Delphi Tactical LLC

Delphi Tactical BUR-1 Billet Upper Receiver

Delphi Tactical



The Delphi Tactical BUR-1 Billet Upper Receiver is precision machined beyond Mil-Spec requirements from a solid block of lightweight aerospace grade aluminum on a 4 axis CNC, with critical tooling dimensions held to within ±.001″. BUR-1 receivers are then Type III Class II black hard anodized with a surface hardness of 60 Rockwell. The Delphi Tactical BUR-1 Upper Receiver features:

  • Multi-Caliber Capability – Compatible with any caliber designed for the AR15 platform (5.56, .223, .300AAC, 6.5Gr, .458 SOCOM, etc.)
  • M-4 Feed Ramps
  • Completely Assembled with Forward Assist and Ejection Port Dust Cover installed
  • Flat Top Design with Picatinny Rail
  • Compatible with all standard AR-15 components and aftermarket parts — Machined pocket to accommodate Magpul BAD Lever or similar aftermarket bolt catch/release system
  • All Hard Edges have been deburred to create a sleek appearance with smooth lines and functional purpose
  • Designed to match the lines and contours of our DP-15 Billet Lower Receivers
  • Lifetime Warranty / 100% Made in America

The BUR-1 Billet Upper Receiver is the perfect base for your custom AR15 build. Machined beyond mil-spec dimensions with surgical tolerances, BUR-1 uppers work with both Commercial and Mil-Spec components, and ensure the highest quality with a correct component interface.