AR10 Gas Piston Conversion Kits

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10 years 6 months ago #37822 by faawrenchbndr
Replied by faawrenchbndr on topic AR10 Gas Piston Conversion Kits
Why do you feel you need a piston conversion?
Personally, I would stick with DI and spend the money on better glass.

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10 years 6 months ago #37823 by MrMarty51
Replied by MrMarty51 on topic AR10 Gas Piston Conversion Kits
:I-agree:
Anyhow, I was just in the Armalite site, they are having a Easter Sale on their complete uppers.
AR10 uppers is a penny under sixhundred bucks.
AR15 uppers are a bit less, they even have some pre-ban stuff, for a bit more.

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10 years 6 months ago #37824 by LebbenB
Replied by LebbenB on topic AR10 Gas Piston Conversion Kits
The key to a conversion kit (IMO) is the bolt carrier. The bolt carrier should be a one piece affair with the strike face machined into the carrier vice bolted on in place of the gas key. Also there should be some sort of carrier tilt mitigation like a flange on the end of the bolt carrier.
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10 years 6 months ago #37832 by faawrenchbndr
Replied by faawrenchbndr on topic AR10 Gas Piston Conversion Kits
Darn good point. However, I am really diggin the PWS piston system. I picked up a Diablo 7.75" piston upper for my pistol blaster. Their system is a great deal like the AK. Gasses act directly on the piston. Piston is affixed to the rod. Rod is affixed to the carrier. Smoothest piston upper I have ever shot. The PWS .308 guns are amazingly accurate.

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10 years 6 months ago #37833 by LebbenB
Replied by LebbenB on topic AR10 Gas Piston Conversion Kits
Is that a long stroke or short stroke system?

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10 years 6 months ago #37836 by faawrenchbndr
Replied by faawrenchbndr on topic AR10 Gas Piston Conversion Kits
It is a long stroke system

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10 years 6 months ago #37894 by JUICE9269
Replied by JUICE9269 on topic AR10 Gas Piston Conversion Kits
What is the difference between long and short? What makes one "in theory" better than the other, or what are the advantages of each?

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10 years 6 months ago #37911 by faawrenchbndr
Replied by faawrenchbndr on topic AR10 Gas Piston Conversion Kits
The PWS system is very much like the design of the AK's gas system. The gas acts upon the piston, pushing the rod rearward, driving the bolt carrier group.
In many other systems, the gas acts on the piston, pushing the rod, that IMPACTS the bolt carrier, driving the bolt carrier rearward.

Why smack a part with a hammer when you can push it?

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10 years 6 months ago #37992 by JUICE9269
Replied by JUICE9269 on topic AR10 Gas Piston Conversion Kits
Thanks, that all makes sense to me. I realize this stuff is probably very simple to most but when you haven't been educated and aren't aware of what's out there, a guy can make mistakes in buying or be misled.

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10 years 6 months ago #38120 by SOC
Replied by SOC on topic AR10 Gas Piston Conversion Kits
My line of thought on piston AR conversions...

1. The gas piston, op rod and carrier should be one part (Like the PWS)

2. If your going to do the above you might as well wrap the (buffer spring) around that op rod.

3. On a semi auto only AR the rest of the carrier behind the rear of the firing pin isn't anything other than added cycling mass, chop it off.

4. Since your carrier is chopped you don't need to worry about the rear of it being swelled out, tapered, special bushing etc to prevent buffer tube ware... Well actually you wouldn't even need a buffer tube.

5. At this point you might as well pick out your favorite folding stock...


Personally... I'm tinkering with a hybrid of the above. Instead of a piston and op rod I'm just extending the gas key all the way to the gas block and shortening the gas tube to a "spigot". Cut a notch in the end of the extended gas key for a recoil spring retainer.

Presto, gas op AR with a folding stock.

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