Comments by "" (@RedXlV) on "XM29 OICW Mockup" video.

Well they reduced the weight by by a pound and a half compared to the OICW prototype, by using a bolt-action grenade launcher instead of a semi-auto. Well that and the fact developing it a decade later meant the electronic components could be much smaller yet more capable. They also gave it a single selector with positions for safe, 3-round burst, semi-auto, and grenades, instead of two selectors like the OICW. But the most important thing is that Korea completely discarded the moronic idea of trying to make it light enough to be an infantry rifle. The K11 is a squad support weapon, while the majority of Korean infantry carry the conventional K2 rifles. It's fine for the squad's machine gun to be a lot heavier than the rifles, so it's also fine for the grenadier weapon to be heavier. And for the 20mm airburst grenades, apparently they handled the lethality concerns about the smaller grenade by making it a shaped charge. With all of the explosion directed downward, you don't have any of the force or shrapnel wasted by going upward. It all hits whoever's below the grenade when it airbursts.
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@dba7dba I presume that it's not too difficult to program the grenade's detonator so they'll only explode when the shaped charge is pointed downward. The basic concept behind these smart grenades, after all, requires the software to know the orientation of the grenade because it determines distance traveled via counting the number of rotations.
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