Has anyone heard of this before? The Army guideline requires the new weapon to share ammo mags. Will it be a swap out of uppers or a completely different weapon?
https://www.popularmechanics.com/military/weapons/a23654011/army-68-calliber-bullet-replace-556/
https://www.popularmechanics.com/military/weapons/a23654011/army-68-calliber-bullet-replace-556/
The U.S. Army has selected a new round to replace those equipping its M4A1 carbine and M249 Squad Automatic Weapons. The Army selected five companies to produce prototype weapons in the new, mysterious 6.8-millimeter round.
Not much is known about the Army’s new 6.8-millimeter round. A 6.8mm Remington Special Purpose Cartridge, invented in 2002 by U.S. Special Forces, exists but critics charge it exhibits only marginal improvements over 5.56. It could be the round in question, but maybe not. It could be an enhancement of that round, or something different altogether that shares the same width.