Tag: 5.56 x 45mm

AR-MPR: .223 Remington -vs- 5.56 NATO – What’s the skinny?

One of the first things people ask when it comes to the AR-15 platform is: “What exactly is the difference between .223 Remington and 5.56 NATO (5.56mm x 45mm), and why should I care?”. Here, I’ll give you the essential facts related to the differences between these cartridges and the corresponding chamber dimensions. This understanding […]




Reloading Safety

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