Full Auto @ 18,000 Frames per second...

Meh, so long as he's been instructed on muzzle control I don't see the big deal. And it's 5.56 not like 308 or something juicier. When I was younger I shot a full auto ak as the very first gun I ever shot.
 
Amazing how sturdy that that AR is. I remember when they did slow motion video of some other ARs and AKs the barrel flex was wild, as well as some 50.cals they did slow motion on. I'm sure that short barrel has something to do with it.

And did anyone catch at the end of the video where they gave that small demonstration of the revolver being fired underwater? it just shows how much gas and pressure escapes between the cap of the cylinder and barrel mouth. I wonder if they would ever design a modern revolver like the 1895 Nagant to have lockup with the cylinder moving forward to seal the cartridge to the barrel. no gas escaping would mean for higher pressure and higher velocity and muzzle energy no? Just some thoughts...

Dan.
 
ObviousNovice said:
Amazing how sturdy that that AR is. I remember when they did slow motion video of some other ARs and AKs the barrel flex was wild
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Put a 20" barrel on that AR and it will flex just as much. Flex is not a problem if the barrel harmonics are consistent from shot to shot.

no gas escaping would mean for higher pressure and higher velocity and muzzle energy no?
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Nearly imperceptible benefits for greatly added engineering complexities and cost of manufacturing. There's a reason the Nagant design didn't endure.
 
Cool vid.
Must say that is a very strange setup for the carbine.
There is no front sight post, and no provision to mount one (no railed forend or gas block).
 
ObviousNovice said:
And did anyone catch at the end of the video where they gave that small demonstration of the revolver being fired underwater? it just shows how much gas and pressure escapes between the cap of the cylinder and barrel mouth. I wonder if they would ever design a modern revolver like the 1895 Nagant to have lockup with the cylinder moving forward to seal the cartridge to the barrel. no gas escaping would mean for higher pressure and higher velocity and muzzle energy no? Just some thoughts...
Click to expand...

There is actually a modern gas seal revolver, the Knight's Armament Silenced Revolver Rifle (SRR) but it has a gas seal primarily to make the suppressor work, rather than for any ballistic benefit. It was built as a survival rifle for pilots and the like, the idea being that they could use it to take small game and the like, and if necessary, as a defensive carbine.

I also noticed that they got the description of the action for the AR15 wrong. They described a blowback action, where the pressure of the gas in the barrel blows the casing out, rather than the rearward motion of the BCG driven by gas ported off from the barrel. Suffice to say a straight blowback 5.56 would not likely be a fun gun to shoot.
 
Ar180shooter said:
It looks to be a standard gas block with the front sight post ground off for some reason.
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Yeah, I know, it's very strange. It's like they ground it off because they wanted it to go under an extended handguard, and then changed their minds and kept the original handguards.

Anyways, cool vid.
 
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