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Home of the 6.8 SPC - 68forums.com » 6.8 SPC Industry Partners » AR15 Performance » ARP Piston system

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Old 10-16-2009, 08:42 AM   #141
nfldraftdog
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Quote:
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So does this mean you have all the parts back and are in the manufacturing phase?
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Old 10-16-2009, 09:15 AM   #142
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Yes. I have to chink a log house this weekend but I should be able to get about 10 built and tested next week, a few tomorrow.
Adam, send that 5.56 this way.
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High performance 6.8 configurations lower peak pressure so a stiffer charge of powder may be used to obtain a higher velocity.
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Old 10-16-2009, 09:34 AM   #143
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Constructor, what are the benefits of long vs. short stroke pistons systems? What makes your piston system different from a conversion system bought from another manufacturer?
No op rod return springs to break like on the short stroke systems, the springs on the short stroke are over the hottest part of the barrel.
No spring pressure on the barrel from the op rod being pushed forward.
Our system has 5 ports and an "off"
A long stroke is a "push" system not an "impact" system.
Our system can be cleaned from the front by removing 1 pin, you have to remove the float tubes to clean most short stroke systems.

99% of all short stroke systems were copied from the Armalite AR180
my original design for the mono-chassis is based on the AK the LS system is modified to work in an AR15 without modifying the receiver.
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High performance 6.8 configurations lower peak pressure so a stiffer charge of powder may be used to obtain a higher velocity.
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Old 10-16-2009, 09:41 AM   #144
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Quote:
Originally Posted by constructor View Post
No op rod return springs to break like on the short stroke systems, the springs on the short stroke are over the hottest part of the barrel.
No spring pressure on the barrel from the op rod being pushed forward.
Our system has 5 ports and an "off"
A long stroke is a "push" system not an "impact" system.
Our system can be cleaned from the front by removing 1 pin, you have to remove the float tubes to clean most short stroke systems.

99% of all short stroke systems were copied from the Armalite AR180
my original design for the mono-chassis is based on the AK the LS system is modified to work in an AR15 without modifying the receiver.
Sounds awesome! Thanks
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Old 10-16-2009, 12:05 PM   #145
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That was one of the things that confused me for awhile until I read into it for a bit. Sweet H!!! Very very nice.
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Old 10-16-2009, 06:32 PM   #146
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Very nice set up. I think it will be a huge success.
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Old 10-17-2009, 12:31 AM   #147
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Hmm I've got an XT with piston on order but can't decide about the pinned key vs. integral...

Is the extra $100 for the integral key worth it (anyone)? What would be the consequences of a broken key, piston parts coming at your face?
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Old 10-17-2009, 05:10 AM   #148
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Do you still need to make the one piece bolts or are they finished also?
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Old 10-17-2009, 05:31 AM   #149
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how do they work on 14.5 barrels LOL
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Old 10-17-2009, 09:44 AM   #150
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Better yet, a 13.7?
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