This YouTube video provides an in-depth, real-world performance review of a custom 14.5" Bartlein AR-15 barrel from Compass Lake Engineering after approximately 3,500 rounds. The analysis covers build quality, throat and chamber wear, and group testing with four different ammunition loads. The video also announces upcoming changes to standardizing ammunition for future AR-15 Barrel Series episodes to enhance consistency. Viewers are encouraged to engage in the comments section.
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