This comprehensive guide synthesizes expert insights from a firearms instructor on Criterion barrels, detailing their construction, performance metrics, and value proposition. It covers barrel materials like 416R and 4150 CMV, various coatings (nitride, chrome-lined), rifling types, and the critical aspect of gas porting. The analysis includes specific accuracy results, barrel life expectations, and comparisons against other brands, concluding that Criterion offers a superior balance of accuracy, durability, and cost for AR-15 platforms.
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