Donut said: From this we can conclude in the future the only countries at war are America and Israel. That or they lost miserably.
if it's between america and israel (or two of them working together and unfortunately lost) the israel have replaced Galil with TAR-21 since galil is extremely heavy and jams frequently (one of the most failed AR) and america will use their XM8 (cancelled) or XM29 since it's the future where OICWs are the basic weapon for all doctrine