Originally Posted by
JusticeM4
My opinion only, nothing else revolutionary will come out of the current M4/AR15 platform without a new type of ammunition as many have previously mentioned.
Look at the current tire design for comparison; we are still using the same concept for what, more than a century now? Unless it is completely revolutionalized (like air-less run-flat type rubber which have already come out as prototypes) and adopted by all major car and tire manufacturers, we will still have the same tire with minimal improvements within the next decade or so.
To me, newer rifles like the SCAR16/17 and Bushmaster ACR are the way to go. Heck even the Kriss Vector subgun in a rifle caliber with improved ergos and overall function might be a different but interesting option. Bullpups like the Tavor are nice and all, but unless it is adopted and fielded by the US Mil as well it will never come into majority acceptance as M4's did. Just my 2c...