Olympic Arms AR-15
01-07-2009, 04:08 PM
#61
0.0 BAR
Thread Starter
Join Date: Mar 2005
Posts: 0
Re: Olympic Arms AR-15
Originally Posted by scottsi
Thats because that gun has a gas piston system, which makes it 10x more reliable than your standard gas inpingement systems. Dont make me go all JD on you. Dirty AR's suck.
Let me top it off, that sand test was retarded, the ejection port was face down, the bolt was closed and they poured sand on the other side. Lets see them hold the bolt open, pour sand into the upper, and then try and rack a round. They'd have better luck with the gas piston system but i still doubt it would work.
Let me top it off, that sand test was retarded, the ejection port was face down, the bolt was closed and they poured sand on the other side. Lets see them hold the bolt open, pour sand into the upper, and then try and rack a round. They'd have better luck with the gas piston system but i still doubt it would work.
01-07-2009, 04:12 PM
#62
3.0 BAR
Join Date: May 2006
Posts: 5,322
Re: Olympic Arms AR-15
Originally Posted by J.H.Christ
get a springfield xd40 like i have and quit being a little 
.
.
I really like my XD45. In the future will probably look for a subcompact 9mm or 40, but this has the stopping power if I ever need it.
01-07-2009, 04:13 PM
#63
3.0 BAR
Join Date: Feb 2005
Posts: 4,935
Re: Olympic Arms AR-15
no its not, yours is gas inpingement. If somehow you got a gas piston AR for 700 bucks consider yourself extremely lucky, because thats the bottom end of how much the conversions cost. AK47 is gas piston, and so is almost every other battlefield rifle, M1A FAL HK's, galil, SKS, everything really. AR is a good gun, but the way it operates is extremely retarded.
01-07-2009, 04:26 PM
#64
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Join Date: Mar 2005
Posts: 0
Re: Olympic Arms AR-15
Originally Posted by scottsi
no its not, yours is gas inpingement. If somehow you got a gas piston AR for 700 bucks consider yourself extremely lucky, because thats the bottom end of how much the conversions cost. AK47 is gas piston, and so is almost every other battlefield rifle, M1A FAL HK's, galil, SKS, everything really. AR is a good gun, but the way it operates is extremely retarded.
01-07-2009, 04:39 PM
#65
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Join Date: Feb 2005
Posts: 4,935
Re: Olympic Arms AR-15
the big piston looking thing that slides backwards and forward is the bolt/bolt carrier.
Direct inpingement works like this:
Round is fired and exits barrel
hot gas that pushes the round forward also escapes through a hole in the top of the barrel (aka gas block and gas tube)
on the gas block there is a gas tube that runs from the gas block into the upper reciever and connects to the top of the bolt/bolt carrier (piston looking thing)
The tube on the bolt/bolt carrier is slightly larger than the gas tube, so they mate Male to Female
This gas pressure forces the bolt back, ejecting a round, and a spring in the buttstock forces the bolt forward cycling and chambering another round
That is direct inpingement
Now the problem with direct inpingement is with where the male to female tubes meet, when the gas blows the bolt back the excess gas just gets thrown all into the upper reciever, and that is an area that SHOULD stay clean.
If you want me to explain gas piston I will.
Direct inpingement works like this:
Round is fired and exits barrel
hot gas that pushes the round forward also escapes through a hole in the top of the barrel (aka gas block and gas tube)
on the gas block there is a gas tube that runs from the gas block into the upper reciever and connects to the top of the bolt/bolt carrier (piston looking thing)
The tube on the bolt/bolt carrier is slightly larger than the gas tube, so they mate Male to Female
This gas pressure forces the bolt back, ejecting a round, and a spring in the buttstock forces the bolt forward cycling and chambering another round
That is direct inpingement
Now the problem with direct inpingement is with where the male to female tubes meet, when the gas blows the bolt back the excess gas just gets thrown all into the upper reciever, and that is an area that SHOULD stay clean.
If you want me to explain gas piston I will.
01-07-2009, 04:47 PM
#66
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Thread Starter
Join Date: Mar 2005
Posts: 0
Re: Olympic Arms AR-15
I gotcha, so the piston that goes fwd and bckw in the stock with the spring behind it is the direct inpingment system. I understand how it works and everything and how you explain it i could see how it would be an issue.
Looks like i can pick up a gas piston conversion kit for around 400. Might have to do that.
Looks like i can pick up a gas piston conversion kit for around 400. Might have to do that.
01-07-2009, 04:53 PM
#67
3.0 BAR
Join Date: Feb 2005
Posts: 4,935
Re: Olympic Arms AR-15
well no you dont need a gas piston, but it is better. Directinpingement is a '---- where you eat' kind of thing. It expells tons of hot gasses into the bolt/bolt carrier/ magazine, basically everything. Once the female and male tubes seperate theres still gas coming through and it escapes into whereever it can go, and in this case its usually the previously mention things. A gas piston AR would be the ---- though, but there is nothign wrong with direct inpingement as far as a plinker, but i'd be hard pressed to want to use it in a real battle as my main gun. With my AR i found if i didnt clean it after every range trip (300-500 rounds) it would jam up real bad on the next trip, and by jam it would fire a round and leave the shell jammed in the chamber. That would equal certain death in a firefight.
01-07-2009, 05:11 PM
#69
1.0 BAR
Join Date: Dec 2006
Posts: 311
Re: Olympic Arms AR-15
Watch this and click the "compare to xx" in the lower right. It has an animation for both.
http://www.armytimes.com/projects/fl...02_20_carbine/
http://www.armytimes.com/projects/fl...02_20_carbine/
01-07-2009, 05:27 PM
#70
3.0 BAR
Join Date: Feb 2006
Posts: 2,808
Re: Olympic Arms AR-15
Originally Posted by scottsi
the big piston looking thing that slides backwards and forward is the bolt/bolt carrier.
Direct inpingement works like this:
Round is fired and exits barrel
hot gas that pushes the round forward also escapes through a hole in the top of the barrel (aka gas block and gas tube)
on the gas block there is a gas tube that runs from the gas block into the upper reciever and connects to the top of the bolt/bolt carrier (piston looking thing)
The tube on the bolt/bolt carrier is slightly larger than the gas tube, so they mate Male to Female
This gas pressure forces the bolt back, ejecting a round, and a spring in the buttstock forces the bolt forward cycling and chambering another round
That is direct inpingement
Now the problem with direct inpingement is with where the male to female tubes meet, when the gas blows the bolt back the excess gas just gets thrown all into the upper reciever, and that is an area that SHOULD stay clean.
If you want me to explain gas piston I will.
Direct inpingement works like this:
Round is fired and exits barrel
hot gas that pushes the round forward also escapes through a hole in the top of the barrel (aka gas block and gas tube)
on the gas block there is a gas tube that runs from the gas block into the upper reciever and connects to the top of the bolt/bolt carrier (piston looking thing)
The tube on the bolt/bolt carrier is slightly larger than the gas tube, so they mate Male to Female
This gas pressure forces the bolt back, ejecting a round, and a spring in the buttstock forces the bolt forward cycling and chambering another round
That is direct inpingement
Now the problem with direct inpingement is with where the male to female tubes meet, when the gas blows the bolt back the excess gas just gets thrown all into the upper reciever, and that is an area that SHOULD stay clean.
If you want me to explain gas piston I will.
