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Upper Authority
  • Equipment
  • Builds
  • Fundamentals
  • Maintenance
  • Hunting
  • Apparel

Home ยป Equipment

Equipment

assembled AR-15 bolt carrier group resting on a wooden surface
Bolt Carrier Groups • Equipment

Best Bolt Carrier Groups by Use Case and Reliability

2 months ago
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assembled AR-15 bolt carrier group resting on a wooden surface
Bolt Carrier Groups • Equipment

Bolt Carrier Group Buying Guide: How to Choose the Right BCG

2 months 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

2 months 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

3 months 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

3 months 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

3 months ago
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Three AR-style buffer tubes in black, gray, and tan finishes arranged diagonally on a dark workbench surface
Accessories • Equipment

Buffer Tube Types and Differences Explained

3 months ago
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A bolt carrier group component shown at an angle on a white background
Bolt Carrier Groups • Equipment

What Is a Bolt Carrier Group? Role and Function in an AR-15

3 months ago
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Close-up of an AR-15 bolt carrier group showing the gas key and bolt assembly on a white background
Bolt Carrier Groups • Equipment

Best Budget BCG Options for Reliable AR Builds

3 months ago
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Two AR-15 upper receivers shown side by side, PSA on top and BCM on bottom, both with 16-inch barrels and M-LOK handguards
Equipment

PSA vs BCM Comparison: Which AR-15 Brand Fits Your Build

3 months ago
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Equipment Components

  • Accessories
  • Bolt Carrier Groups
  • Upper Receivers

Featured Posts

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    Camouflage • Hunting Best Camo Patterns by Terrain: Matching Camouflage...
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    Camouflage • Hunting How to Choose Camo for Hunting: Terrain, Season, and...

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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