SHOP Pro2a Tactical's huge selection of 6.5 Grendel Uppers. 6.5 Grendel is a great round for long range hunting/shooting, offers ballistics that rival a 308 Win at certain distances. It's high bullet coefficient offers great effective range and velocity. All our 6.5 Grendel Uppers are Type II Chamber which is the original chamber designed by Alexander Arms and made right here in the USA. Pro2a Tactical Uppers are backed by a Limited Lifetime Warranty.