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Upper Authority
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Builds

Two metallic bolt carrier groups placed parallel on a dark textured surface with soft directional lighting
Builds

BCG Compatibility Guide: What Works and What Causes Problems

1 month ago
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Disassembled AR-15 rifle parts arranged on a dark workbench, including stock, grip, upper and lower receivers, barrel assembly, magazine, and small components
Builds

AR-15 Parts Compatibility Guide: What Works and What Doesn’t

1 month ago
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Partially assembled AR-15 with upper receiver, lower receiver, bolt carrier group, and magazine on a workbench
Builds

Budget AR Build Guide: Smart Parts and Cost Breakdown

1 month ago
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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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AR Platform Explained

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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