Can't say I am impressed with the new weapons overall. the 277 Fury being pretty much a necked down and up pressured 7.62x51. The rifle variant X5 I believe it is called would make a good designated rifleman piece but the X250 SAW is in my opinion much more of a lightened medium machine gun. To put out rounds like the M249 can it would have to be belt fed and crew served.
Page details technical specifications, development, and operational history of the SIG-Sauer M250 (XM250) including pictures.
The speculation about this mysterious .277 SIG Fury has practically broken the internet. GunsAmerica spoke directly with an authoritative representative from SIG to get the scoop and figure out exactly what's going on with this cartridge.