Grab the best 5.56 NATO rifles for your needs online at Pro2A Tactical! 5.56 NATO is the #1 choice for the US Armed Forces, popular choice for its widespread availability and low recoil that even women and children can handle. We offer our 5.56 rifles in many different lengths, barrel finishes along with many other options like muzzle brakes, trigger upgrades, adjustable gas blocks, side folding adapters, etc . Our top priority in making 5.56 rifles is accuracy and reliability.