** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Windham Weaponry was officially ...

The 5.56 designated marksman rifle is often an accurized M16 equipped with an optic. These rifles have changed through time, and the most well-known is the Mk 12. One of the big advantages of the 5.56 ...