There's not a ton written about this that I can find, but cracks are appearing in the US military's plan to replace the M4 with a heavier battle rifle designed to defeat body armor. Sig Sauer, which also holds contracts for the current generation pistol and LMG, won a contract last year to also provide the US military with a new rifle. This rifle is to be called the XM7. The civilian equivalent is the Sig Spear. Calling this thing an assault rifle is a bit of a stretch, as it is very heavy and uses heavy ammunition. It turns out that the rifle is failing to penetrate modern body armor without the use of tungsten bullets. Also its reliability is questionable.
In fairness, the Pentagon response to this reasoning is "we don't care, kill'em all".
I definitely see arguments against radar because it's a kind of crutch to get around poor scouting and ground intelligence. Also, in the modern era of supersonic missiles, what does radar get you, exactly?
an anti-aircraft missile lock on your plane
:inshallah-script: