An AR-15’s gas port is a small hole drilled into the barrel, but its influence over rifle behavior...
Fundamentals
Equipment
Best Bolt Carrier Groups by Use Case and Reliability
Choosing the right bolt carrier group is one of the most important decisions in any AR-15 build. It...
Builds
BCG Compatibility Guide: What Works and What Causes Problems
A bolt carrier group (BCG) is often treated as a drop-in component. In reality, it’s one of the...
Maintenance
Overgassed vs Undergassed AR-15: Symptoms, Causes, and Fixes
An AR-15 does not need excessive recoil or violent cycling to function reliably. In fact, the most...
Equipment Evaluations
Latest Equipment & Build Guides
AR-15 Gas Port Size Explained: Reliability, Recoil, and Cycling
Overgassed vs Undergassed AR-15: Symptoms, Causes, and Fixes
AR-15 Gas System Explained: How It Actually Works
Best Bolt Carrier Groups by Use Case and Reliability
Bolt Carrier Group Buying Guide: How to Choose the Right BCG
Bolt Carrier Group Maintenance: Cleaning, Lubrication, and Wear Points
Direct Impingement vs Piston AR: Key Differences and Tradeoffs
AR-15 Cycle of Operations: How the Rifle Functions Step by Step
AR Platform Fundamentals: How the System Works
