Lol, 58 isn't like an M16 you need to clean the fuck out of every 10 minutes.
Also, I much like this new full metal pistol being produced by Slovenia. The Rex-1 looks like if a HK USP and a SiG P220 had a baby. It's a standard hammer fired pistol, considering it has a decocking lever, most likely an SA/DA trigger which is good. It'll likely be chambered in 9mm NATO as well but maybe they might produce caliber variants, they've already got three different sizes available; Standard, Combat and Compact.
Also comes in colors Black, Olive Green and Flat Dark Earth, the latter two only being the lower receiver(grip, slide and levers remain black). They has a promotional video as well which I personally think could've been done better.
Another tidbit of interest, apparently DARPA has developed the first Guided .50 Cal Round. Called the EXACTO (Extreme Accuracy Tasked Ordinance), the bullet is capable of being guided mid flight to it's target though I don't know what the exact science behind it all is. Video shows the bullet being guided to it's target point in thermal.