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

Latest Articles

Bolt carrier group partially extended from an AR-15 upper receiver showing bolt lugs and cam pin on a workbench
Fundamentals

AR-15 Cycle of Operations: How the Rifle Functions Step by Step

1 month ago
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Disassembled AR-15 components arranged on a workbench, including upper receiver, lower receiver, bolt carrier group, and buffer system
Fundamentals

AR Platform Fundamentals: How the System Works

1 month ago
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AR-15 bolt carrier group with bolt extended next to a barrel extension on a workbench
Fundamentals

AR-15 Headspace Explained: What It Is and Why It Matters

1 month ago
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Close-up of an AR-15 upper receiver on a workbench with the gas block, gas tube, and partially removed bolt carrier group visible.
Fundamentals

AR-15 Dwell Time Explained: How It Affects Cycling and Reliability

1 month ago
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AR-15 bolt carrier group on a dark workbench showing bolt lugs and carrier body
Fundamentals

Bolt Locking and Unlocking Process Explained

1 month ago
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Several AR-15 buffer tubes and related components arranged on a dark workbench surface
Accessories • Equipment

Best AR-15 Buffer Tubes: What Actually Matters and What to Buy

1 month ago
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Close-up of an AR-15 lower receiver with buffer tube, buffer spring, and buffer partially removed
Fundamentals

AR-15 Buffer System Basics: How It Works and Why It Matters

1 month ago
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Side-by-side comparison of two buffer tubes measured with calipers showing diameter differences and rear profile shapes
Accessories • Equipment

Mil-Spec vs Commercial Buffer Tube Dimensions Explained

1 month ago
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Two black AR-style buffer tubes labeled mil-spec and commercial placed side by side on a dark surface
Accessories • Equipment

AR Buffer Tube Compatibility Chart

1 month ago
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Two black AR-15 buttstocks placed facing each other on a dark textured surface with soft studio lighting
Accessories • Equipment

AR-15 Stock Compatibility Guide: What Fits and Why It Matters

1 month ago
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Featured Posts

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    Camouflage • Hunting Best Camo for Hunting: Choosing the Right Pattern...
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    Camouflage • Hunting Types of Camo: How to Choose the Right Camouflage...

Upper Authority

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

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