Upper Authority
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Upper Authority
  • Equipment
  • Builds
  • Fundamentals
  • Maintenance
  • Legal
  • About

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Builds

Budget AR Build Guide: Smart Parts and Cost Breakdown

2 months ago
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by Upper Authority Editorial Team
Partially assembled AR-15 with upper receiver, lower receiver, bolt carrier group, and magazine on a workbench
Equipment • Upper Receivers

Best AR Upper Receivers by Use Case

2 months ago
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by Upper Authority Editorial Team
Complete AR-15 upper receiver assembly with handguard and barrel on a neutral background
Fundamentals

Upper vs Lower Receiver: Key Differences Explained

2 months ago
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by Upper Authority Editorial Team
Close-up of an AR-15 upper and lower receiver separated at the takedown pins
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Featured Posts

  • Fundamentals AR-15 Gas Port Size Explained: Reliability, Recoil...
  • Infographic showing overgassed, ideal, and undergassed AR-15 ejection patterns with recoil and cycling characteristics.
    Maintenance Overgassed vs Undergassed AR-15: Symptoms, Causes...
  • Close-up of an AR-15 barrel with gas block and gas tube on a light background
    Fundamentals AR-15 Gas System Explained: How It Actually Works

Upper Authority

Upper Authority is a structured educational resource focused on AR platform configuration, component evaluation, and performance consistency.

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Equipment Guides

  • Best Upper Receivers
  • Best Bolt Carrier Groups
  • Best AR Optics
  • Budget Upper Receiver Guide
  • AR-10 vs AR-15 Comparison

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