what caliber is an ar
The AR-15 was developed as a lighter, 5.56 mm version of the AR-10. The AR in all ArmaLite pattern firearms simply stands for ArmaLite, and can be found on most of the company's firearms: AR-5, a .22 caliber rifle; the AR-7, another .22 caliber; the AR-17 shotgun; the AR-10 rifle; and the AR-24 pistol.
The AR platform can be adapted to dozens of different calibers, like this Rock River Arms LAR-6.8 chambered in 6.8 Remington SPC. In these troubled times where everyone wants to stir up trouble and hate over our differences in appearance, I want it to go on record that I donât just tolerate diversity, I embrace it.