Arne Brennan, co-designer of the 6.5 Grendel and ammunition wizard continues to invent new cartridge options for the AR-15 rifle. Last year, Raptor Shooting Systems released the .45 Raptor, a round based on the .308 Winchester that advertises superior performance to other big bore AR-15 rounds like the .50 Beowulf, .450 Bushmaster, and .458 SOCOM. Now, […]
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