Monthly Archives: January 2026

How to Build a 300 Blackout AR-15: Barrel Length, Gas System, Uppers & Parts Guide

300 Blackout AR-15

The 300 Blackout AR-15 has carved out a strong niche in the firearms community thanks to its versatility, smooth performance in short barrels, and impressive balance of subsonic and supersonic capabilities. While traditional 5.56 rifles remain dominant, more shooters are discovering how the 300 Blackout AR-15 fills a unique role—especially for suppressed shooting, home-defense configurations, […]