Numeric Pagination - Upper Authority

Latest Articles

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

5 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

5 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

5 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

5 months ago

AR-15 bolt carrier group on a dark workbench showing bolt lugs and carrier body

Bolt Locking and Unlocking Process Explained

5 months ago

Several AR-15 buffer tubes and related components arranged on a dark workbench surface

Accessories • Equipment

Best AR-15 Buffer Tubes: What Actually Matters and What to Buy

5 months ago

Close-up of an AR-15 lower receiver with buffer tube, buffer spring, and buffer partially removed

AR-15 Buffer System Basics: How It Works and Why It Matters

5 months ago

Accessories • Equipment

Mil-Spec vs Commercial Buffer Tube Dimensions Explained

5 months ago

Two black AR-style buffer tubes labeled mil-spec and commercial placed side by side on a dark surface

Accessories • Equipment

AR Buffer Tube Compatibility Chart

5 months ago

Two black AR-15 buttstocks placed facing each other on a dark textured surface with soft studio lighting

Accessories • Equipment

AR-15 Stock Compatibility Guide: What Fits and Why It Matters

5 months ago