08:10 very popular story in US, they did try to change their primary rifle (M16 or they simply call it AR15) to XM8. I'm not the expert of guns or history, but one of the reasons why the XM8 did not pass was because the gun does not share the same parts and didn't support a rail system, which both the M16 and M4 carbine has. Also, it had a common issue just like G36 rifles. I bet you already know about this for sure. I'm just glad to see a Japanese person who is interested in weapons, unlike the other 99% of peace borders.