AR-15 UPPER RECEIVER PARTS

Outerwild Manufacturing produces our M16 BCG which is trusted by seasoned shooters and depended on by experienced builders. Our goal is to go above and beyond Mil-Spec expectations! Outerwild’s secret sauce: PRECISION GROUND. We machine and grind our BCGs to perform for tens of thousands of rounds. We grind the outside dimensions and ALL three interior dimensions of our carrier, giving our BCGs a near frictionless surface finish. The polished nickel boron coating is applied by the industry leading plater, WMD. The NiB-X coating provides a very slick surface that makes for easier cleaning and increases reliability. Properly built, no corners cut.

• M16 Style Carrier
  • Machined from 8620 Steel
  • Heat Treated
  • Final Grind Before Plating
  • Polished Nickel Boron Coating (NiB-X)
• 5.56/.223 Bolt
  
  • Machined from 9310 Steel
  • Heat Treated
  • Shot Peened
  • MPI
  • Polished Nickel Boron Coating (NiB-X)
• Billet Gas Key
  • Machined from Solid Billet of 4140 Steel
  • Properly Seated with Grade 8 Fasteners
  • Properly Staked
  • Polished Nickel Boron Coating (NiB-X)
• Cam Pin
  • Machined from 4140 Steel
  • Heat Treated and Ground
  • Polished Nickel Boron Coating (NiB-X)
• Billet Extractor
  • Machined from Solid Billet of 4140 Steel
  • Phosphate Coated
  • Extractor Insert Included
  • Viton O-Ring Included
• Firing Pin
  • Machined from 8640 Steel
  • Hard Chrome Plated
• 100% American Made

The White Label 4140 gas block will provide you with a lifetime of service.

.750" Low Profile Gas Block - Set Screw

• Machined from 4140 pre-hardened steel
• H&M Black Nitride coated
• Closed end gas tube hole
• Chamfered roll pin hole for easy assembly
• Includes gas tube roll pin
• 100% USA Made

• Machined from mild steel
• Black oxide coated
• Fits 1/2" diameter threads
• Weight: .12 ounces
• 100% USA Made