Gunpowder residue explosion at indoor shooting range - GIF and video

Gunpowder residue explosion at indoor shooting range in Brazil. Residue collecting between or beneath the floorboards? Was not cleaned correctly with explosion-proof vacuum (or should've been a concrete floor anyway?).

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2:26 video. First spark around 1:33. To watch frame-by-frame, pause the video, then use the comma and period keys to move forward or back one frame.

https://www.youtube.com/watch?v=2RkRTs9k7hY




Previously:

https://www.homemadetools.net/forum/...479#post117039
https://www.homemadetools.net/forum/...392#post116759
Dump truck hydraulic explosion
https://www.homemadetools.net/forum/...6845#post84468
https://www.homemadetools.net/forum/...3329#post98769
https://www.homemadetools.net/forum/...062#post115400
https://www.homemadetools.net/forum/...339#post116489
https://www.homemadetools.net/forum/...5851#post82647
https://www.homemadetools.net/forum/...5830#post82618
https://www.homemadetools.net/forum/...2518#post96512

not sure what happened there but then again I only been to an indoor range 1 time. I vowed never to walk inside of one ever again. There was some fool in there with a.50 cal black powder rifle on a pistol range and the management was ok with it.

Hard to tell what set it off (bad camera angle) but once it went...oh boy. Probably a lag with the guy closest last shot or a hot casing on the floor. I've only been to indoor ranges a couple of times myself and all had concrete floors and range officers that were very attentive...still saw a couple of ID10T's in the few times I went.

What is strange is that it looks like a range for officers in some sort of police unit! You would think that being the case that maintenance and cleaning where good.

Indoor shooting range.

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Should have used a shoulder stock. or as Gomer would say "surprise, surprise, surprise!"

Did it even have a pistol grip or just the nub left over after sawing off the stock. the movement of the hand wasn't what you would expect when a pistol grip is ripped out of it.

I agree Frank. Her hand barely moves and when she turns around her fist size seems unchanged.

Quote:

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Originally Posted by Frank S

Did it even have a pistol grip or just the nub left over after sawing off the stock. the movement of the hand wasn't what you would expect when a pistol grip is ripped out of it.

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Definately not enough!

AK-47 sticks on full auto. 1:30 video:

https://www.youtube.com/watch?v=bOABE14iUgk

kid didn't hardly know what to do once the weapon went full auto. Almost turned the situation into a deadly disaster.
If there hadn't been a range instructor grab the fore grip there is no telling how the outcome may have turned out.
But my question is did the weapon have a worn sear or a faulty sear spring that caused it to go full auto or did the selector get moved somehow to full auto then once it started continuous fire did the kid panic and put a squeeze hold on the trigger.
In basic We started training for full auto with the M16 A1 by starting out with only 3 and then 5 round magazines working up to a full 20 round magazines then to rapid swap out firing 5 full magazines in a timed exercise. My favorite range fire though was with the M60 although I hated cleaning it

OK 4 real. not AK 4 seven. Not Funny!