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Posted: 10/7/2010 1:28:35 AM EDT
| I am sure this has been talked about before and I am a bit new to this subject but I was doing some research on what some manufactures are calling a long stroke piston retrofit being easier on the bolt, ect. i was wondering what everyone thought about this and if anyone had experience with the "long stroke" kits. Thanks |
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Primary Weapons Systems manufactures a line of push rod long-stroke uppers and rifles called the MK1 series, but it is not a kit. The overall appearance and function is much like an AK but is adapted into an AR platform with standard A3 pattern receiver.
The only other one I know of that qualifies as a long stroke is from TNW which is still an impinged op-rod style similar to the short stroke systems but the length of travel the piston undergoes defines it as a long stroke. |
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I do think the long stroke would be nicer in the AR system because of the support on the carrier group, the short strokes seem to be working fine, long stroke systems tend to store more energy in the bolt group because the piston rod and sometimes piston are one piece with the carrier, you might also get a better push stroke but the time there is so small, a short stroke actually just touches the carrier for a smidgen and then separates for the stroke.
I think water would make it worse for a long stroke to function because displacing the water in the piston column |
| It would be drained from there in the same time or less that the bore would need to be drained before firing. Water in the bore is a scary thing regardless of operating system. This is why all of the "over the beach" and "water test" videos are kind of a joke......IMHO |
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