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Called the LE901-16S, Colt's 7.62x51 mm NATO is an "out-of-the-box" concept that's a marriage of the AR-10 and AR-15 platforms. An adaptive rifle that uses a highly modified and upgraded AR-15 lower receiver with an equally unique AR-10 magazine well, the LE901-16S quickly converts to an M4-type carbine in 5.56x45 mm NATO. Conversions for the AR platform aren't a new innovation, but Colt's LE901-16S is a unique adaptation.
Learn more about the gun's design in this segment from American Rifleman TV.
At the dawn of mechanized warfare, the U.S. Military contended with the reality that infantrymen would need an effective arm to defeat tanks. Their idea? Bring more gun.
For nearly 25 years, Springfield Armory has offered its affordable and reliable XD series of handguns, and for 2026, that design has now entered its fourth generation with the Mod.4 OSP.