Can we take a moment to appreciate how cool the OG charging handle is. Really like that Brownells stuck with it for their BRN line.
I would not agree to that. Same 3-piece short-stroke system was used in SVT-38. Evolved into SVT-40, Kar.43, FN-49 and the FN FAL. And again, well before AR-18. And even SVT-38 was not unique in its gas system, MGs of of 1890x-1910x had it all. So AR-18 piston gas system is just an evolutionary iteration.
Your supposed examples of an earlier version of the AR18/180 multi-part Gas-Piston design are dubious at best. Last I checked, every one of those Short-Stroke Gas Systems that you named has a single-piece (or at best, a 2-piece) Piston akin to the WK180, that is accessed by the removal of a Gas Plug from the Gas Block (screw-in like the SVT-40, or mechanical retention like the FN-49 and FAL). Those are not the same, distinctive, self-Regulating, 3-piece Piston System innovated by the AR18/180's Short-Stroke Gas System, which is disassembled not by the removal of a Gas Plug, but by collapsing it's length against spring-tension. There is no removable Gas Plug necessary with the AR18/18's, Self-Regulating Gas System design.
The AR18/180 3-piece Gas Piston was more than just an evolutionary iteration of the single-piece Gas Piston found in the FAL, et-al. It launched an entire branch of modern firearms design using the 3-piece Piston,and Self-Regulating Gas Block design of the AR18/180. The HK G36, HK 416, Enfield L85A2, and PSA Jakl designs all spring immediately to mind. So, I reckon you and I will simply have to disagree on the importance assigned to the AR18/180's innovative 3-piece Short-Stroke Piston System.
Um... you both are getting limited by not having access to some of those (Horilka to the FAL I suppose but you - I'm surprised you don't have a SVT in your collection) because the SVT totally uses the multi-piece piston and gets disassembled without removing the gas plug... Take a look at this video https://youtu.be/sC8A72XNHcA?feature=shared&t=63 Or did you mean something else?
We will be meeting with PSA at Shot Show regarding the NDS 18.
The IRUNGUNS Team
We will be meeting with PSA at Shot Show regarding the NDS 18.
The IRUNGUNS Team
Your supposed examples of an earlier version of the AR18/180 multi-part Gas-Piston design are dubious at best. Last I checked, every one of those Short-Stroke Gas Systems that you named has a single-piece (or at best, a 2-piece) Piston akin to the WK180, that is accessed by the removal of a Gas Plug from the Gas Block (screw-in like the SVT-40, or mechanical retention like the FN-49 and FAL). Those are not the same, distinctive, self-Regulating, 3-piece Piston System innovated by the AR18/180's Short-Stroke Gas System, which is disassembled not by the removal of a Gas Plug, but by collapsing it's length against spring-tension. There is no removable Gas Plug necessary with the AR18/18's, Self-Regulating Gas System design.
The AR18/180 3-piece Gas Piston was more than just an evolutionary iteration of the single-piece Gas Piston found in the FAL, et-al. It launched an entire branch of modern firearms design using the 3-piece Piston,and Self-Regulating Gas Block design of the AR18/180. The HK G36, HK 416, Enfield L85A2, and PSA Jakl designs all spring immediately to mind. So, I reckon you and I will simply have to disagree on the importance assigned to the AR18/180's innovative 3-piece Short-Stroke Piston System.
Nope, I don't have an SVT and haven't owned one in long enough to have completely forgotten how its Gas System is configured. I sold off a very thorough WW1 and 2 collection of Commonwealth, US, German and Russian SMGs and Rifles to finance a family trip to Orlando back in the mid-2000's. I also had a more limited selection of Italian, French and Japanese WW 1 and 2 weapons, limited to selected rifles. In any case, it all went to finance that trip to Disney World, Seaworld, et-al. The selling prices for very nice milsurps back then would make you cry today!
I will stand corrected on the SVT-40, but not the FAL or its FN49 precursor. Those single-piece short-stroke pistons do not feature the same multi-piece construction for ease of disassembly, nor are they self-regulating like the AR18/180 (they both have externally-adjusted Gas Regulators for that specific purpose).
[nerdy talk on]
So it seems that you consider AR-18/180 system outstanding for three main reasons: multi-piece construction, "self-regulation", no need for gas plug removal.
Before I address these I would like to clarify what I meant to say when I mentioned "SVT-38/40, Kar.43, FN-49 and the FN FAL". I meant to say these rifles represent development of "short-stroke" gas system and in summary used ALL DESIGN ELEMENTS that then appeared in AR-18/180. I did not mean that every and each rifle from that list has very similar system.
Now, allow me address the items you consider as unique or outstanding features of AR18 system.
1. Mutli-piece design. The only purpose of AR-18/180 having additional piece between piston and op-rod is to facilitate disassembly. Exactly the same idea (rod + rod extension) was used in SVT-38/40 and then copied into G43. So, just a version of well-known design. In SVT it is rod extension + rod + cylinder + piston, in AR18 it's rod + rod extension (called "rod link" in original manual) + cylinder + piston. Swapping the places of rod and rod link is not revolutionary at all.
2. Self-regulation. You probably mean those vent holes in the piston by "self-regulation"? I would personally call it "excessive gas venting" or simply "gas venting" feature. Indeed SVT-38/40 is lacking this feature in production version, instead it's compensated by manual regulation. However G43 already has it. To my shame I don't know who/when first introduced excessive gas venting into gas operated firearm, however I know that before AR-18/180 it was present at least in following short stroke piston systems: G43 and SKS-45. So, again, nothing unique, just a variant of existing and proven design.
3. Both SVT and G43 don't require gas key/plug removal for gas system disassembly.
If anything AR18 gas system is G43 gas system with rod and extension swapped places.
[nerdy talk off]
We will be meeting with PSA at Shot Show regarding the NDS 18.
The IRUNGUNS Team
hoping for some good news post meeting.
The market needs a proper 180 inspired design.
Well, as I said, I think that rather than address each of your points in order with pedantic and tiresome detail, we are best to simply agree to disagree and move on. I don't believe that I ever claimed that the AR-180 was the first and only successful short-stroke piston design, the point I was trying to make was that the AR18/180 was the first short-stroke piston system to bundle ALL 3 of my reasons together into one successful package. There is a reason that the AR-18 operating system was emulated on a go-forward basis into some of the most successful short-stroke small arms designs of the late 20th and early 21st Centuries. At that point in time it was the most advanced example of the short--stroke system in existence. The AR18/180 may have been a military and commercial sales failure, but in terms of meeting its design objective of a simple rifle readily manufactured by emerging nations lacking the sophisticated and expensive forging technology required by the M16/AR15? Well, it was actually a tremendous success. Hence the widespread duplication in many successful Western small arms designs thereafter.
More nerd talk, I like seeing our members have real knowledge and opinions about things vs all asking for a version of a gun that takes pinned drum in 22mm cannon but with a folding stock and a 1.3” barrel that’s still NR and other nonsense