A good friend of mine stopped by yesterday for a Saturday morning Jiu-jitsu workout..He is currently an active SEAL Team member...

After working out we sat around for a cup or 10 of coffee and discussed firearms.. he brought up the contract the US DOD make with Barrett this past year... had nothing but glowing praises of this rifle and its abilities.. can switch the barrels to 8 different calibers.. its not a secret about the contract as it was all over the news earlier this year.. he did mention calibers they are currently training and experimenting with.. which I will not reveal at this time along with other details of our conversation.. It appears the US is actively pursuing replacement models for various uses on the field..

Based on the info provided earlier in this post, I do NOT believe this is/was originally intended to be a hand held firearm similar to the M4 chambered in 5.56.. as stated it was to be used for a belt fed fully auto machine gun of some sort..I will leave it at that..