6.8 SPC was designed and developed by war-fighters for war-fighters. The round was designed to give much better terminal performance than the 5.56mm round, without the increased recoil and the much larger weapon platform of the 7.62 x 51mm round. The 6.8 SPC has superior terminal ballistics out to 600 meters and yet can be easily adapted to the AR style platform. Thus, the 6.8 SPC combines the best feature of both the 7.62 x 51mm and the 5.56 rounds without either of their deficits.