I just watched a bunch of videos on possible future replacements for the 240, and the M4. It looks like the front runner wants to go for a mid size plastic cased 6.8. The last simi reasonable rummer I had heard was a modified 6,5 in a FN FAL rifle. I guess they can't decide on going with an assault rile and a "battle" rifle. so they will try to split the differance. Hopefully the troops won't have to pay for any mess ups.