PLA Small arms

by78 said:

Looking through the new standard issue scope.

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Looks like an ACOG equivalent. Looks like a fixed 3 power magnification, which is a nice balance between medium range accuracy and utility/speed at close range. 3 power is about where you want to be without needing a backup red dot for close range work or going up to LPVOs.

Glass looks nice and clear, distortion at the edges would be concerning, but looks to be more a result of the photography rather than optic.

BDC reticle looks decent, I especially like the chevron design as it allows for very precise aiming. But maybe could have used a minimalistic Christmas tree design for longer ranges with windage/movement holdovers plotted. But granted that’s pretty rare for prisms.

Not sure about the illustration, seem a little weak, especially if you want to use it both eyes open at close range. Again maybe down to camera, or maybe individual soldier preference if he taped over more of the fibre optic to reduce the intensity of the illumination. Colour is interesting as it’s gold, rather than the more common red or green. Gold is the newest offering, and is said to be better than the former two, so good to see the PLA actually get ahead of the curve for once with infantry stuff.

kriss said:

In the case of chinese rifle it's always take one bullet as wrench to adjust a little lever at the muzzle. Not the easiest thing to do with rifle but reasonably convenient even in a fire fight.

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We are not talking about an assault rifle here. This is 14.5x114mm round. That is not a caliber for an infantry rifle. It’s at the very edge of an automatic cannon. That’s a gun almost 2 meters long.
Farther such selectors are iffy as it would depend on what type of gas operation. Impingement or a piston okay. Delayed blowback not happening. Frankly I don’t know enough about the QJG 02 HMG every source I have just repeats generalizations. It doesn’t seem to have an external gas block meaning it might be delayed blowback meaning an internal operation.

TerraN_EmpirE said:

We are not talking about an assault rifle here. This is 14.5x114mm round. That is not a caliber for an infantry rifle. It’s at the very edge of an automatic cannon. That’s a gun almost 2 meters long.
Farther such selectors are iffy as it would depend on what type of gas operation. Impingement or a piston okay. Delayed blowback not happening. Frankly I don’t know enough about the QJG 02 HMG every source I have just repeats generalizations. It doesn’t seem to have an external gas block meaning it might be delayed blowback meaning an internal operation.

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According to it's gas operated

Delayed blowback is a form of gas operation. As are Direct impingement, short and long piston. What gas operated means is the cycle is self sustaining the propellant gases generate the force to cycle the ejection and feeding of the ammunition. No electric motors like on a chain gun or Gatling gun. Even roller delayed or recoil or blowback are still gas. So it’s a very general statement.

Looking at images of QJG 02 there are a tube under the barrel that looks like DI/piston. Do you think it's something else?

TerraN_EmpirE said:

Duplex rounds. The US ACR program trailed these for infantry rifles back in the 1980s. The triple type us the triplex.

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Engineering judgement, based on the cutout, would suggest the concept would not work. I do not see any marks on the bullet and so it was placed inside through the cutout rather than pushed in from the throat. Are the bullets attached to each other? If not, how do you prevent the lower bullets from relocating to the bottom and block the primer opening? Even if it does not go that far, how they come out would be totally unpredictable.

Just not enough data. It could be or it could not.

hkky said:

Engineering judgement, based on the cutout, would suggest the concept would not work. I do not see any marks on the bullet and so it was placed inside through the cutout rather than pushed in from the throat. Are the bullets attached to each other? If not, how do you prevent the lower bullets from relocating to the bottom and block the primer opening? Even if it does not go that far, how they come out would be totally unpredictable.

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The cut aways don’t have powder in them if they did the bullet would be packed. The shells are stacked nose to tail. Multiplex rounds work just not as well as wanted.

TerraN_EmpirE said:

Just not enough data. It could be or it could not.
The cut aways don’t have powder in them if they did the bullet would be packed. The shells are stacked nose to tail. Multiplex rounds work just not as well as wanted.

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Keyword is "powder". The vibration can easily relocate the solid bullets. For this to work there has to be some interference or linkage with the throat.

Even if this is not a problem, the cartridge has to be lengthened to accommodate the extra bullets, otherwise they'd exit at subsonic speed and not go very far. The effective range of most bullet is at near transonic regime and at that point there isn't enough energy to do much damage. Another problem is if the case is filled with power, how can you ram them in? Most of rifle powders are in the form of short sticks, they do not flow well in the time frame of loading a bullet.

I am not a manufacture here I don’t know but they did lengthen the case. Even went as far as some production and sale.

I’m not a reloader, but I’m pretty sure standard rifle cartridges are not jam packed to the brim with powder, as ‘hot loads’, where too much powder gets added to a cartridge during reloading, is a real issue. As such, loosing some internal volume to extra projectiles may not necessarily reduce the powder charge by much or even any.

You also have the option of using a more energy dense, and expensive powder type where you do loose volume but want to keep muzzle energy at a certain minimum level.

Point is there are options, and if they made the round, it means they worked out an acceptable solution. No need to overly concern ourselves with the idea of duff rounds, as they would not have bothered making it if it hit like wet paper towels.