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 receiver area showing the upper and lower receiver, trigger, magazine well, and optic mounted on the rail

How an AR-15 Works: Complete Cycling Process Explained

2 months ago

Blueprint-style diagram of an AR-15 rifle showing internal and external components

AR-15 Parts List: Complete Breakdown of Every Component

2 months ago

Close-up view of an AR-15 lower receiver showing the trigger, safety selector, and magazine well

What Is a Lower Receiver? Function, Parts, and Legal Overview

2 months ago

Close-up of an AR-15 upper receiver showing the ejection port and top rail

What Is an Upper Receiver? Complete Breakdown

2 months ago

Exploded blueprint view of an AR-15 platform rifle showing separated modular components including upper receiver, lower receiver, handguards, stock, and magazines

AR Platform Explained: Complete Beginner Guide

3 months ago