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Colt AR-15--AR-10-.308

What’s The Difference Between AR-10 And AR-15 Rifles?

This Is What Sets AR-10 and AR-15 Rifle Apart The AR10 and AR15 are solid workhorse weapons, and pretty interchangeable in terms of their style and functionality, but there is one pretty big, fundamental difference: Caliber.  The 7.62x51mm (~.308 inch) AR10 was developed by Eugene Stoner way back in the 1950’ and entered production at […]