Infinite Scroll - Upper Authority

Latest Articles

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

5 months ago

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

5 months 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

5 months 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

5 months 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

5 months 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

5 months ago

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

5 months ago

person cleaning the interior of an AR-style rifle upper receiver with a brush

Maintenance

AR Maintenance Basics: Keeping Your Rifle Reliable Over Time

5 months ago

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

5 months ago

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

5 months ago