It’s the XM5
https://en.wikipedia.org/wiki/XM5
It fires 6.8×51mm ammo, 9 gram bullet at 2,694 ft⋅lbf ,
https://en.wikipedia.org/wiki/.277_Fury
the Army’s current 5.56 is 4 grams at 1,325 ft⋅lbf, so the new rifle shoots a bullet twice as heavy, with twice the muzzle energy, so it can punch through modern body armor
Which means my ballistic plates are obsolete :(
So the British were right in the early ‘50s when they were pursuing a .270 round. That was their original goal for thr P14 in 1914. Now I imagine this day -night-fog-laser-taser-self compensating-all cooks your rats front sight also need a 15 lb. battery of which the operator will need to carry a spare. The compensator seems quite small for a 13” barrel with 80K PSI ammunition. What’s the ammo weigh and what is the expected load out? Grenade launcher? The more I hear about this weapon the more leery I become. 6.8 is only .8 from 7.62. Ammo is going to be considerably heavier than 5.56. This is a real factor for SOGs who lcan’t count on resupply. There is a plethora of other questions as well. Does any have any idea of what level of field testing this jewel has been through?
So basically the same energy and stopping power as the Russian 7.62x54R with increased complexity and cost, and lower reliability?