This may Ruffle Some Feathers | ADJUSTABLE GAS BLOCKS ON AR15’s.
Adjustable gas blocks on AR-15 platforms can become a significant failure point due to carbon buildup over time, leading to seized adjustment screws. This video highlights how a PSA barrel, designed for reliability with over-drilling, combined with an Aero Precision adjustable gas block, failed to cycle after years of use and carbon accumulation. The situation was exacerbated by a snapped adjustment wrench, rendering field fixes impossible, leading to the conclusion that properly ported barrels are often a more reliable long-term solution.









