Remington Defense showed their new version of the ACR which they plan to submit as part of the Army’s Individual Carbine solicitation.
They’ve trimmed 1.8 lbs from the ACR. They’ve improved the hand guard and removed the large fork used to change barrels. Instead, a barrel spanner is supplied. Additionally, the stock no longer folds but still collapses. Finally, it will accept any mil-spec AR pistol grip.