Ares Defense G-35 Gas Piston Kit

ZM has no military contracts. So either they never entered there weapon on fears it would fail or they did enter it and it did fail.
Either case ZM isn't a success story.
 
ZM has no military contracts. So either they never entered there weapon on fears it would fail or they did enter it and it did fail.
Either case ZM isn't a success story.
Now that's very funny! Whether the military uses them or not is surely not a measure of success. Lots of fantastic things around that the military can't or won't buy because of politics or affordability. As far as I know, Al has never bid on a military contract. Maybe he will someday.
Maybe Para will do it. I know there are some out there in contractor's hands. Nothing but good reports from where the sand is as fine as talcum powder. The world's best shooters consider them a success, and that holds way more water in my opinion.
 
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True. Since the 60's, people have been trying to improve on Stoner's design. There are all sorts of solutions, some successful, most not so.

the one that comes to mind immediately is the RHINO- you varied the gas by means of a screw in the front end- never had any intrest as we don't shhot full auto up here anyway-and i think i first saw one in a article dated 78- i didn't like the way you had to carve up your forend to accomdate the piston housing
 
Now that's very funny! Whether the military uses them or not is surely not a measure of success.

Yes passing some quality standard is no measure of success, its a measure of quality and durability.

Lots of fantastic things around that the military can't or won't buy because of politics or affordability. As far as I know, Al has never bid on a military contract. Maybe he will someday.

By not submitting his product means he did not feel 100% confident in his product, so why should I be?


Maybe Para will do it. I know there are some out there in contractor's hands. Nothing but good reports from where the sand is as fine as talcum powder. The world's best shooters consider them a success, and that holds way more water in my opinion.

Coming from a ZM owner I am sure you are very impartial.
Contractors could carry rubber batons, that doesnt make them awesome superior weapons.
Next time post some references.
 
Now that's very funny! Whether the military uses them or not is surely not a measure of success. Lots of fantastic things around that the military can't or won't buy because of politics or affordability. As far as I know, Al has never bid on a military contract. Maybe he will someday.
Hk coul dnot market Free ### - and units buy the Hk416 hand over fist...

Maybe Para will do it. I know there are some out there in contractor's hands. Nothing but good reports from where the sand is as fine as talcum powder. The world's best shooters consider them a success, and that holds way more water in my opinion.

Worst best shooters as a group would be the Tier1 SF units -- and last time I looked none of those units are using ZM.

I appreciate you seem to be buddies with the owner -- but I consider them a dog and would not touch them with a ten foot pole.
 
You know what you can - send me a demo unit and a case of ammo, and I will let you know! :p (at no charge for my time!)
 
Do you own this type of rifle? Do you know how it works? Obviously and blatantly no.

I own several, and unlike you, understand how they work, and unlike you, have inspected their parts. For you to understand how it works, and for others, here's the deal:
1)The gas block is similar to a DI AR, except the gas tube is only about 4" long
2) From there, it's all different. The bolt carrier is permanently attached to an 11" long piston, with a cupped end.
3) The cupped end slides fully over the protuding gas tube, where a small clip holds it in place.
4) The clip is held in place by the recoil spring (pressure), which is positioned around the piston.
5) When it fires, the gas emerges from the tube, pushes on the piston over the barrel, moving the bolt and it's attached piston backwards. The gas action happens 7" away from the carrier. No gas is spewed into the bolt/carrier/locking lugs and anything else. This is the achillies heel of DI type AR's.

Simple. A DI system means the gas is what operates the bolt/carrier DIRECTLY. Direct Impingement. This is indirect, so no longer a DI type system. Maybe it can be called a hybrid piston, or a hybrid DI, but it's not DI as accepted in conventional AR's. Do your homework.
Dan, if you're ever visiting back here in Ontario, be happy to let you shoot mine at the range. I'm sure you will be impressed, whatever system you call it. The proof is always in the shooting.

Then you might want to take your bolt carrier apart and clean it. I bet it's pretty dirty in there, by now.

"DI" means nothing, in and of itself. It is a name for a system in which gas is routed by the gas tube to a chamber bounded at one end by the bolt, and at the other end by the bolt carrier. This gas, at high pressure, pushes the bolt and bolt carrier apart, causing the bolt to rotate (and thereby unlock), and causing the bolt carrier to move rearward with respect to the locking block. The bolt carrier must be moving with sufficient velocity that it's momentum can completely extract the cartridge (including primary extraction), #### the hammer, and completely move the bolt carrier assembly to the rear.

The amount of force required to do this is considerable. Force in this context is gas pressure multiplied by area.

The cup on the end of what you are calling a "piston", but is in fact merely a second concentric gas tube, does not have sufficient surface area to provide the requisite force to accomplish all of the above.

I think its rather hootingly funny that you own the rifle, shoot the rifle, and don't understand its most basic nature.

I figured out it was DI in about 45 seconds, and confirmed it with the Para rep at SHOT. What clued me in was the small size of the "piston".

I don't need to own an airplane to know how one works, either.

Ah, here's the patent:

http://www.google.com/patents?id=5NE3AAAAEBAJ&dq=extended+gas+key

Your "11" piston" is actually called an "extended gas key"... in YOUR owners manual. Just thought I'd ppoint that out.

Here's a thread from some forum, too:

http://www.calguns.net/calgunforum/archive/index.php/t-58423.html
 
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And, from page 16 of the owners manual, so kindly linked by Scarecrow:

As a bullet passes the gas port (a small hole in the barrel below front sight)
gas is tapped off, flows through gas tube, into bolt carrier chamber driving
the bolt rearward.

That's direct impingement.

On reflection, I find it ENORMOUSLY funny that you don't understand your own gun. I guess the proof isn't in the shooting! :)
 
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Hk coul dnot market Free ### - and units buy the Hk416 hand over fist...



Worst best shooters as a group would be the Tier1 SF units -- and last time I looked none of those units are using ZM.

I appreciate you seem to be buddies with the owner -- but I consider them a dog and would not touch them with a ten foot pole.

I never said they were better than the HK. Just an alternative. You may not like them, and that's great. What I meant by the world's best shooters was Todd, Robbie and Jerry. The guys that train most of the elite. They all own ZM's. That's where I take my cue.
 
Alex, The fact is a competition shooter will train parts of a SOF shooting package - not the whole package -- which is why guys are sent around to various places to pick up the good and discard the bad.
A competition shooter will have a different need for a firearm than soldiers will have from a weapon.
Since none of those guys are runnign around all jocked up - nor using other accessories that are required in the fight. Bartledan pointed out that you clearly dont understand the weapon, I will offer that you clearly also dont understand the training and needs behind the shooters.

If it works for you fine -- but dont mistake that for real world needs and sucesses.

-Kev
 
Alex,

I will have two Hk416's in and around the Ottawa/Petawawa area if you interested in checking them out. I'm not trying to be a #### about this -- just have an open and honest exchange of info.

I still agree with Reaper and many other that the DI system of the M16FOW is 99.9% of everyones needs
 
Alex, The fact is a competition shooter will train parts of a SOF shooting package - not the whole package -- which is why guys are sent around to various places to pick up the good and discard the bad.
A competition shooter will have a different need for a firearm than soldiers will have from a weapon.
Since none of those guys are runnign around all jocked up - nor using other accessories that are required in the fight. Bartledan pointed out that you clearly dont understand the weapon, I will offer that you clearly also dont understand the training and needs behind the shooters.

If it works for you fine -- but dont mistake that for real world needs and sucesses.

-Kev
Hi Kev!
Just so that I can be accurate, I just talked to Al and I was wrong. The US gov't did test and purchase a number of these and they are in use currently in small numbers within the SF community. Have been since about 2001.
Oh, and the system in the ZM is called Delayed Enclosed Gas. The block delays the gas before sending it down the op-rod(gas key/piston). This aids greatly in keeping it reliable in full auto with a short barrel. It's extra vents keeps it much cleaner in the carrier area then a regular DI setup. This is 100% true as I can compare the dirt buildup with my DPMS. I've already shot a HK in Mass. last year and it's great. But it recoils harder than a 11.5"ZM in full auto.
 
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Oh, and the system in the ZM is called Delayed Enclosed Gas.

And I am called "super mega ultra power Dan"! Words are just noisy breaths, and the written word is just squiggly marks on dead trees. "Delayed Enclosed Gas" has no more innate meaning than "burble grunty bye bye foof"

The block delays the gas before sending it down the op-rod. This aids greatly in keeping it reliable in full auto with a short barrel. (gas key/piston).

Marketing balderdash. Real fluids don't work that way.

It's extra vents

delete this tripe....

keeps it much cleaner in the carrier area then a regular DI setup.

...and this is true. There would be no problem of "overblast" getting in the receiver area. it would accumulate harmlessly in the handguard.

This is 100% true as I can compare the dirt buildup with my DPMS.

So, either you knew all along your ZM was direct impingement, or you have decided to backpedal. Which is it?

The only way you can have honestly thought your ZM was a piston gun was by never having stripped the bolt carrier, in which case you cannot know how it compares with your DPMS.

If you have honestly compared the ZM with the DPMS, you must have known all along the ZM was DI.

These two are logically incompatible. They cannot BOTH be true.

This looks bad, frankly. I'm guessing you are now, or are almost, involved in the distribution of this rifle in Canada. Perhaps you have partial ownership of the excerable Para-Ordnance?

I've already shot a HK in Mass. last year and it's great. But it recoils harder than a 11.5"ZM in full auto.

To say that one .223 rifle recoils harder than another draws from me a resounding "piffle!" Again, I smell marketing hogwash.

PLUS, if you have shot a ZM in full auto, this lends credence to my theory that you are involved in the ZM business.

If you are in the ZM business, then let me point out that that technology was patented in like 1984, and failed to catch on. Also, that patent is expired, and now anybody can develop it. Probably not the world's best investment.

Perhaps you should do your homework? :)

Christ, I'm merciless!
 
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And I am called "super mega ultra power Dan"! Words are just noisy breaths, and the written word is just squiggly marks on dead trees. "Delayed Enclosed Gass" has no more innate meaning than "burble grunty bye bye foof"
:D lol

ooh, and tagged for interest
 
To say that one .223 rifle recoils harder than another draws from me a resounding "piffle!"

Even though .223 is a fairly "easy" round to shoot, i have heard from just about every HK 416 upper owner in the US, that the 416's have noticably more "felt recoil" compared to a DI system (most likely due to the op-rod smacking into the bolt carrier)

Nothing wrong with DI by any means, i like the HK416 just because of its handguard :D
 
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