Heavy Pistol Calibers and the AR Platform in Practical Use 

Moriartiarmaments002 Feb, 2026Business

Pistol-caliber AR platforms occupy a space that is often misunderstood. They are not miniature rifles, and they are not oversized with handguns. Instead, they combine familiar AR ergonomics with cartridges designed around mass and momentum rather than speed. Among these options, .45 ACP builds stand out for how clearly; they reveal the trade-offs and advantages of heavy pistol calibers in a long-gun format.