This is one of our most popular rounds-especially among our military customers. It is used for target shooting, service and survival. It is the round used in the AR-15/M-4/M16 rifles. The .223 Remington has almost the same external dimensions as the 5.56×45mm NATO military cartridge, which is why we categorize them together. Popular firearms that use this cartridge are the AR-15 and Remington .223.
*An interesting side note here about a misconception spread by the anti-gun lobby: the “AR” in AR-15 does not stand for “Assault Rifle” – it stands for “ArmaLite,” a registered trademark for the gun.

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Attention Customers: Due to an emergency in the HCC family, any orders placed on or after March 16, 2019 will not be processed for at least two weeks. We apologize for any inconvenience. Please email us with any questions, as we will still be able to respond to emails. Thank you. Dismiss