A few people that I've recommended the XCR complain that it's not available in a more powerful caliber and until then they will look elsewhere even though they are impressed and really like the XCR platform. The 6.8SPC will help in this regard but it's hard to find ammo in this caliber and it's really expensive. I think if you guys really want to get sales up you're going to have to release the 7.62x39 kit, whatever it takes. Ammo is very cheap and plentiful in this caliber and is much more powerful than .223 for personal defense (for when the SHTF). Don't get me wrong, I love my XCR, it's a pleasure to shoot. But with the .223 round it's limited to current/ex-military folks and hobyists. An XCR in a cheaper and more powerful caliber I think will make it more practical as a multi-purpose tool.