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Fundamentals

AR-15 free-float handguard with M-LOK slots and top Picatinny rail

What Is an AR-15 Handguard? Handguards & Rail Systems Explained

3 weeks ago

AR-15 ambidextrous charging handle

What Is a Charging Handle? How an AR-15 Charging Handle Works

3 weeks ago

AR-15 fire control group components including trigger, hammer, disconnector, springs, and pins

What Is a Fire Control Group? Understanding the Parts That Control the Trigger

3 weeks ago

Close-up of a rifle barrel showing a highlighted gas port with directional gas flow arrows.

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

5 months ago

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

AR-15 Gas System Explained: How It Actually Works

5 months ago

Side-by-side comparison diagram of two rifle operating systems showing gas flow in a direct impingement system and a piston-operated system

Direct Impingement vs Piston AR: Key Differences and Tradeoffs

6 months ago

Bolt carrier group partially extended from an AR-15 upper receiver showing bolt lugs and cam pin on a workbench

AR-15 Cycle of Operations: How the Rifle Functions Step by Step

6 months ago

Disassembled AR-15 components arranged on a workbench, including upper receiver, lower receiver, bolt carrier group, and buffer system

AR Platform Fundamentals: How the System Works

6 months ago

AR-15 bolt carrier group with bolt extended next to a barrel extension on a workbench

AR-15 Headspace Explained: What It Is and Why It Matters

6 months ago

Close-up of an AR-15 upper receiver on a workbench with the gas block, gas tube, and partially removed bolt carrier group visible.

AR-15 Dwell Time Explained: How It Affects Cycling and Reliability

6 months ago