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Fundamentals

AR-15 Gas Port Size Explained: Reliability, Recoil, and Cycling

2 weeks ago

by Upper Authority Editorial Team

Maintenance

Overgassed vs Undergassed AR-15: Symptoms, Causes, and Fixes

2 weeks ago

by Upper Authority Editorial Team

Infographic showing overgassed, ideal, and undergassed AR-15 ejection patterns with recoil and cycling characteristics.

Fundamentals

AR-15 Gas System Explained: How It Actually Works

3 weeks ago

by Upper Authority Editorial Team

Close-up of an AR-15 barrel with gas block and gas tube on a light background

Latest

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

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

1 month ago

Accessories • Equipment

Mil-Spec vs Commercial Buffer Tube Dimensions Explained

1 month ago

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

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

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

1 month ago