The Criterion Barrels AR-15 Bull Rifle Gas System Barrel utilizes a .223 Wylde chamber that is designed to safely and effectively fire both .223 Remington and 5.56 NATO ammunition only.
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by Tatonka, from NJ, United States Asked on October 9, 2021
The Criterion Barrels AR-15 Bull Rifle Gas System Barrel utilizes a .223 Wylde chamber that is designed to safely and effectively fire both .223 Remington and 5.56 NATO ammunition only.