Big Slider - Upper Authority

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 bolt carrier group showing the gas key and mounting screws on top of the carrier

Maintenance

Gas Key Staking Explained: Why It Matters for AR-15 Reliability

1 month ago

Close-up of a metal bolt carrier group resting on a dark workbench with tools blurred in the background

Maintenance

BCG Troubleshooting Guide: Diagnosing AR-15 Cycling Issues

1 month ago

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

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

Close-up of a black AR-style rifle receiver and magazine resting on a padded surface

AR-15 Parts Overview: Components and How They Work

1 month ago