QBZ-191 service rifle family

ohan_qwe

Junior Member
This is an excellent image demonstrating why the gas block is an issue for a full length handguard design like this.

The adjustable gas block is too high for the top rail to be continuous, so they have to leave a gap for it. The problem is that the upper part of the handguard at that location is in pristine position for one to put their hand at for a number of grip styles as well as convenient for mounting some accessories right ahead of it.

The small vertical foregrip is placed a bit far back in this case, and one could make a case that the top mounted laser module should be at the front of the rifle's handguard.

The bigger issue is the gap interfering with the grip, and the gas block would likely become rather hot, and the last thing you want is to accidentally burn yourself as you're grabbing the rifle or adjusting your grip.


This is why I've been saying for a while now, that these sort of aftermarket solutions to free floated handguards aren't great, because even though this handguard looks like a good, free floated, lengthened one, with the modern features one would expect, the big adjustable gas block means it has this rather permanent flaw.

The manufacturer should probably just put out a clean sheet upper receiver group, so they have everything better redesigned that can be issued as a complete upgrade kit at the user level.
It looks like the problem can be solved by simply using a small non adjustable gas selector. Or even just angel grind away the top part. The gas block itself is longer than visible and fit under the top rail.
 

Saru

Junior Member
Registered Member
T
This is an excellent image demonstrating why the gas block is an issue for a full length handguard design like this.

The adjustable gas block is too high for the top rail to be continuous, so they have to leave a gap for it. The problem is that the upper part of the handguard at that location is in pristine position for one to put their hand at for a number of grip styles as well as convenient for mounting some accessories right ahead of it.

The small vertical foregrip is placed a bit far back in this case, and one could make a case that the top mounted laser module should be at the front of the rifle's handguard.

The bigger issue is the gap interfering with the grip, and the gas block would likely become rather hot, and the last thing you want is to accidentally burn yourself as you're grabbing the rifle or adjusting your grip.


This is why I've been saying for a while now, that these sort of aftermarket solutions to free floated handguards aren't great, because even though this handguard looks like a good, free floated, lengthened one, with the modern features one would expect, the big adjustable gas block means it has this rather permanent flaw.

The manufacturer should probably just put out a clean sheet upper receiver group, so they have everything better redesigned that can be issued as a complete upgrade kit at the user level.
The issue isn't the gas block the issue is the hanguard it covers the length of the barrel more than it should, the default handguard doesn't reach that far, if anything this might as well be made for both such as 191 and 192, unless it's made for 192 and 19U

However the difference between the one posted previously before this one has a noticable difference, perhaps it is some sort of concept they are making multiple handguards to see which performs better.
 
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Blitzo

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The issue isn't the gas block the issue is the hanguard it covers the length of the barrel more than it should, the default handguard doesn't reach that far, if anything this might as well be made for both such as 191 and 192, unless it's made for 192 and 19U

However the difference between the one posted previously before this one has a noticable difference, perhaps it is some sort of concept they are making multiple handguards to see which performs better.

No lol, the issue isn't the handguard.

The handguard isn't "too long" -- the whole point of this specific handguard is to have a handguard that reaches out further than the default handguard, to have a handguard configuration more similar to something like URGI, which is a similar long handguard free floated upgrade (among other upper receiver modifications) for M4s, which provides the benefit of giving the user more rail space for accessories, as well as better grip options.

The issue for the Type 191 is that its built in gas block design doesn't allow for a continuous longer length handguard to be installed without having that ridiculous cutout for the gas block.

If they had a different, lower profile gas block design, they could have a handguard which was continuous on the top while also still having small side openings in the handguard to enable the gas block to be adjusted. Other modern day rifles have that function (see below)

pof-p415-edge-rifle-08-1200x1800.jpgpof-p415-edge-rifle-01-1200x800.jpgMCX-SPEAR-LT-FEATURES-HG.jpgFdCgBlSWYAEmi2p.jpeg
 

Saru

Junior Member
Registered Member
T
This is an excellent image demonstrating why the gas block is an issue for a full length handguard design like this.

The adjustable gas block is too high for the top rail to be continuous, so they have to leave a gap for it. The problem is that the upper part of the handguard at that location is in pristine position for one to put their hand at for a number of grip styles as well as convenient for mounting some accessories right ahead of it.

The small vertical foregrip is placed a bit far back in this case, and one could make a case that the top mounted laser module should be at the front of the rifle's handguard.

The bigger issue is the gap interfering with the grip, and the gas block would likely become rather hot, and the last thing you want is to accidentally burn yourself as you're grabbing the rifle or adjusting your grip.


This is why I've been saying for a while now, that these sort of aftermarket solutions to free floated handguards aren't great, because even though this handguard looks like a good, free floated, lengthened one, with the modern features one would expect, the big adjustable gas block means it has this rather permanent flaw.

The manufacturer should probably just put out a clean sheet upper receiver group, so they have everything better redesigned that can be issued as a complete upgrade kit at the user level.
There has been sufficient claims that the 191 gas block somewhat isn't hot enough for soldiers to prevent them from gripping onto it similar to the QBZ95
 

Blitzo

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There has been sufficient claims that the 191 gas block somewhat isn't hot enough for soldiers to prevent them from gripping onto it similar to the QBZ95

Well then we can wait and see if they are able to do so in realistic warfighting conditions.

Either way, the point is that having a long continuous handguard is better than having that ridiculous cutout for the gas block, and if the PLA wanted a proper URGI equivalent, then they're probably better off going to the manufacturer and requesting a complete upper receiver group variant be made so that some other changes can be put in as well.
 

Saru

Junior Member
Registered Member
Well then we can wait and see if they are able to do so in realistic warfighting conditions.

Either way, the point is that having a long continuous handguard is better than having that ridiculous cutout for the gas block, and if the PLA wanted a proper URGI equivalent, then they're probably better off going to the manufacturer and requesting a complete upper receiver group variant be made so that some other changes can be put in as well.
Perhaps with QBZ191 Gen 2

Well at least here's a clearer image of it
5e70eb4bgy1hh14ta8n6hj20zk0rr7ds-1.jpg
 

MwRYum

Major
Well then we can wait and see if they are able to do so in realistic warfighting conditions.

Either way, the point is that having a long continuous handguard is better than having that ridiculous cutout for the gas block, and if the PLA wanted a proper URGI equivalent, then they're probably better off going to the manufacturer and requesting a complete upper receiver group variant be made so that some other changes can be put in as well.
Then they might as well go for the QBU-191 type of setup - a handguard that's definitely long enough for such, and the barrel shorten for AR setup.

But indeed, the PLA will need a "long enough" war so to generate the necessary combat experience and demand for such modification(s).
 

Blitzo

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Then they might as well go for the QBU-191 type of setup - a handguard that's definitely long enough for such, and the barrel shorten for AR setup.

Well yeah, that's what I mean by requesting a complete upper receiver group variant.
They can't just shorten the barrel for QBU-191 while maintaining the same handguard, because the QBU-191's gas block is of similar geometry to the standard QBZ-191, and shortening the QBU-191's barrel for the purposes of having a multirole rifle/carbine length weapon (rather than a DMR) would need the gas system to be shortened and also have a more bespoke gas block/adjustor design to allow it to be contained within the handguard without needing a cutout.


But indeed, the PLA will need a "long enough" war so to generate the necessary combat experience and demand for such modification(s).

To be fair to the PLA, what I'm describing is something that would only really be useful for the likes of SOF esque units. Regular infantry don't need it, and even then the gain in capability that a URGI like configuration would yield is not that massive or decisive, especially not for the PLA's focus on air, naval and missile warfare.
 

Saru

Junior Member
Registered Member
Well yeah, that's what I mean by requesting a complete upper receiver group variant.
They can't just shorten the barrel for QBU-191 while maintaining the same handguard, because the QBU-191's gas block is of similar geometry to the standard QBZ-191, and shortening the QBU-191's barrel for the purposes of having a multirole rifle/carbine length weapon (rather than a DMR) would need the gas system to be shortened and also have a more bespoke gas block/adjustor design to allow it to be contained within the handguard without needing a cutout.




To be fair to the PLA, what I'm describing is something that would only really be useful for the likes of SOF esque units. Regular infantry don't need it, and even then the gain in capability that a URGI like configuration would yield is not that massive or decisive, especially not for the PLA's focus on air, naval and missile warfare.
Unfortunately that's the case as interesting as it would be to make the qbz191 more ambidextrous it doesn't seem to be the deal with PLA
 

Blitzo

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Unfortunately that's the case as interesting as it would be to make the qbz191 more ambidextrous it doesn't seem to be the deal with PLA

I never said they needed to make it more ambidextrous?

I was only talking about the upper receiver group in terms of the barrel, barrel nut, gas system/gas block and handguard, for the purposes of enabling a full length free floated handguard.


Besides, it already has a fire selector on both sides, and the existing reciprocating handguard on the right and the bolt release on the left.
 
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