MistWolf
09-12-12, 22:03
I'm starting this thread to keep from further derailing another.
When this was posted in another thread-
Your AK is your piston gun!
I'd sell the upper or whole AR and replace it with something of more quality. Like said above 2 guns are better than 1. Here's a thought, (going against the grain) Sell the AR and build up your amd-65.
Buy a krebs adaptor block and use AR stocks on it. I love mine since that mod. Either way I think everyone seems to agree that selling at least the upper/rifle would be a great idea.
I responded with-
The AR also has a piston
Which inspired-
You talking about one of the piston systems? Not a DI gun, right?
no, he's saying that the bolt/BCG in a normal DI AR is the piston/cylinder setup. The piston is just relocated. Don't think to hard about it. For all general purposes the AR is not considered a piston gun.
Oh ok one of those wise guys huh? J/k
:cool:
(Very astute. Too often I am one of those wise guys)
How can an AR have an operating piston and not be considered a piston system? Actually, how can the AR be a direct impingement system? What does the gas directly impinge on? What did Eugene Stoner identify the system as?
http://www.google.com/patents?id=ETJjAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q&f=false
I understand all of that and Im agreeing with you. I know the AR has a "piston". Most systems actually have a deticated piston not a piston that doubles as the bolt. and the gas impinges on the bolt.
Speaking generally about guns the AR is not consi
Are you all calling the gas key or bcg the piston? Don't pistons usually have rings?
Everybody up to speed? Good.
To answer TSH's last question, the tail of the bolt is the piston, complete with rings
http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
If the rings are missing, damaged or worn, the rifle will not function. The bolt is the piston, the carrier is the cylinder. DI systems do not use rings, nor do they use an expansion chamber as the AR does. With a DI system, the gases impinge directly on the bolt carrier. If the AR gas key was just a cup, the AR would be a DI system. Instead, it's a tube guiding the gas into a cylinder.
For drawings of the Ljungman DI system and from the original Stoner patent, check out this thread
http://m4carbine.net/showthread.php?t=99050
This thread isn't about "DI vs Piston ARs". It's to clarify the fact that the AR has a piston and is not really a DI system.
This site is known to not accept simply regurgitating what others have posted on the internet. We are encouraged to do our own research and become our own Subject Matter Expert. I did my own research and discovered the AR isn't a DI system as is being often repeated. Don't take my word for it, do your own research of the AR, Ljungman and other operating systems and come to your own conclusions
When this was posted in another thread-
Your AK is your piston gun!
I'd sell the upper or whole AR and replace it with something of more quality. Like said above 2 guns are better than 1. Here's a thought, (going against the grain) Sell the AR and build up your amd-65.
Buy a krebs adaptor block and use AR stocks on it. I love mine since that mod. Either way I think everyone seems to agree that selling at least the upper/rifle would be a great idea.
I responded with-
The AR also has a piston
Which inspired-
You talking about one of the piston systems? Not a DI gun, right?
no, he's saying that the bolt/BCG in a normal DI AR is the piston/cylinder setup. The piston is just relocated. Don't think to hard about it. For all general purposes the AR is not considered a piston gun.
Oh ok one of those wise guys huh? J/k
:cool:
(Very astute. Too often I am one of those wise guys)
How can an AR have an operating piston and not be considered a piston system? Actually, how can the AR be a direct impingement system? What does the gas directly impinge on? What did Eugene Stoner identify the system as?
http://www.google.com/patents?id=ETJjAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q&f=false
I understand all of that and Im agreeing with you. I know the AR has a "piston". Most systems actually have a deticated piston not a piston that doubles as the bolt. and the gas impinges on the bolt.
Speaking generally about guns the AR is not consi
Are you all calling the gas key or bcg the piston? Don't pistons usually have rings?
Everybody up to speed? Good.
To answer TSH's last question, the tail of the bolt is the piston, complete with rings
http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
If the rings are missing, damaged or worn, the rifle will not function. The bolt is the piston, the carrier is the cylinder. DI systems do not use rings, nor do they use an expansion chamber as the AR does. With a DI system, the gases impinge directly on the bolt carrier. If the AR gas key was just a cup, the AR would be a DI system. Instead, it's a tube guiding the gas into a cylinder.
For drawings of the Ljungman DI system and from the original Stoner patent, check out this thread
http://m4carbine.net/showthread.php?t=99050
This thread isn't about "DI vs Piston ARs". It's to clarify the fact that the AR has a piston and is not really a DI system.
This site is known to not accept simply regurgitating what others have posted on the internet. We are encouraged to do our own research and become our own Subject Matter Expert. I did my own research and discovered the AR isn't a DI system as is being often repeated. Don't take my word for it, do your own research of the AR, Ljungman and other operating systems and come to your own conclusions