“Commando” marked “partial fence” lower receiver, as used on the XM177 “M16A2” marked and styled lower receiver Additional models will be introduced throughout the year, with more H&R ...

When the M16A2 was adopted in ... arrangement and the benefits of a lower optic mount lead the Army and Colt to collaborate on a “flat-top” upper receiver that could mount an infantry day ...

When the M16A2 was adopted in ... arrangement and the benefits of a lower optic mount lead the Army and Colt to collaborate on a “flat-top” upper receiver that could mount an infantry day ...