List of AR platform calibers

The AR platform has become widely popular for makers of military and sporting rifles. Although the designations "AR-10" and "AR-15" are trademarks of Colt's Manufacturing Company variants of both are made by many manufacturers.

.30-06 Winchester

BHW designated chamberings based on the 6.8 SPC and the 6.5 Grendel were developed by Black Hole Weaponry using their own reamer designs. As they are non-SAAMI cartridges some confusion may exist as each manufacturer makes changes in their own designs that while identically named they are actually different in specifications. GLS

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