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It came as a surprise several years ago when SIG Sauer introduced a direct gas impingement system AR-style variant, the M400 semi-automatic-only carbine, which has some distinct external and internal differences from most AR-style rifles. You can learn more about the M400 in this "Rifleman Review" segment from a recent episode of American Rifleman TV. For more videos like this, visit AmericanRifleman.org/artv.
SHIELD Sights is celebrating its 40th anniversary, marking four decades of British engineering, innovation and contributions to the evolution of modern red-dot optics.
Despite it being the primary rifle of the enemy for most of its existence, American shooters have nonetheless warmed to the AK platform, creating an unlikely love story.