realistically if you want to defeat level 4 plates you need to either use tungsten rounds, or radically redesign what a round is. back in the immediate aftermath of the ngsw decision, in all of the /k/ threads i saw, the armor pen meme comes up but afaik wasn't actually the design goal. allegedly the russian standard issue plate is "protection class 6" but it is basically the same level of protection as level 4. it's very unlikely that the 6.8 round would penetrate that except with tungsten core rounds. i really think engagement distance and commonality with the new mg were bigger factors
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