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August 28, 2006

Let's try something different...

Rather than me being all snarky and showing off I can stump you by controlling the variables (hardly fair) - I'm just going to slap this up there and let *you* guys show off what you know about what this is and how it works, vice "Can you figure out that this is an elephant when all I show you is a cellular slice from a polyp inside it's trunk?" like I usually do... Hey, I know I'm mean - but you keep coming back, so, we're like co-dependent, right? Don't forget to explain *why* a feature is there, not just that it's there. The whole purpose is to inform the curious.

40mm grenade

Extra credit if you figure out the proper nomenclature and nation of origin. I'm going to leave the comments open - but be honest - put your answer/description down and *then* read everybody else's. Block copying from a manual is okay, if that's how you achieve positive buoyancy for your bateaux, but I'll bring the best original answer (in my humble opinion) up into the post and leave it for the archives... just in case there's any egos out there who need a stimulus.

Snerk.

Okay, you guys need some help. How about the flip side? This is what SezaGeoff saw this morning.

The flip side

Bet it doesn't look like you expected on the inside... but the answer to why it *isn't* the M406 (like Doug thought) is clear to the true grognard. And Doug, aside from color - there are only two (related) things that cause the M406 to differ from this round.

Update: This is the M407 - the training version of the M406 HE round. The difference? Aside from the color of markings? The "ball" portion of the grenade. It's not serrated on the inside for fragmentation purposes, and it wasn't loaded with HE. The M407 was in turn replaced by the M781, which had a plastic projectile filled with a marking powder.

SezaGeoff, first out of the chute (and with the second pic to get him started) was the most thorough of you.

The fuze? It's an "all-ways" fuze - with a set-back and spin safety system that didn't allow the grenade to arm until it was a safe distance away from the firer - not that just shooting someone with the grenade wouldn't distract them... even if it *didn't* explode.