Noveske 6mm ARC/6.5 Grendel 10rd AR-15 Magazine

Noveske's 10 round magazine is built for 6mm ARC and 6.5 Grendel, two cartridges that share the same fat case head. A standard 5.56 magazine is the wrong shape for them, so an AR upper in either chambering needs a magazine made for the round, and this is one.

The body is stainless steel. Ten rounds keeps it short, which helps when you shoot prone or off a bipod, and it is a sensible size for hunting where magazine limits apply.