12.5" is the Bastard Sword of ARs
This guide details the complexities of building and optimizing an AR-15 with a 12.5" barrel, often dubbed the 'bastard sword' of AR platforms. Expert Hop explains the velocity myths, dwell time issues, and gas system tuning challenges associated with this barrel length. He emphasizes careful component selection, particularly for gas systems and optics, to achieve reliable and effective performance, especially when using suppressors.













