In one of the presentations at the TFB Gunfest, they give an overview on the SIG Sauer MCX Spear NGSW Rifle... "In this episode of TFBTV, James Reeves meets with Jason St. John of the SIG Defense Strategies Group to talk about SIG’s entry for the NGSW (“Next Generation Squad Weapon”) service rifle, the SIG MCX Spear in 6.8x51mm. In this video, we look at (and of course, shoot) the MCX Spear and talk about the development of the 6.8x51mm “hybrid case” ammunition Sig has developed to work with this platform, and we talk about the potential for this gun to hit the civilian market."