AR10 - Original vs Current Designs

Light Infantry said:
Nice back peddling. LOL.
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You are absolutely correct. There were a handful of semi only AI AR-10s made.
I did see one - in the so-called NATO pattern - that was factory restricted to semi auto only. It was also set up for a scope mount. But this was not one of the KLM rifles. Most likely it was intended as a DM rifle.
 
Light Infantry said:
Interesting. Anymore more info you could share?
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Nothing more than what you can't find on Wikipedia :(

Interesting enough of all the AR10 articles I have read so far, all said the KLM rifles were full autos and put the number of rifles bought by the airline between 5 to 30.

The reality is the AR 10 was manufactured almost 60 years ago in another country, they were never issued to any Canadian Agencies, what was sold to the Canadian civilians market were foreign army surplus, so they would had been converted autos, The factory semi auto versions were pretty rare to begin with, now they are pretty much unicorns, for any of them to have ended up in Canada would had been a private purchase and a one off import.

During the time of it's existent no one really pay much attention to it, it was only because the Firearm Act and the end of the LGR did they became any interest to people, Ironically the now defunct LGR and it's destroyed database would have had the most accurate record of these rifles in Canada, records of when they were destroyed or sold and transferred out of the country.

If any Canadian still have one these in their closet they are probably very secretive about owning them or they never trusted the government enough to voluntary register it in the first place.
 
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Actually did you know that the original AR10 design during trials and evaluation had the gas tube running along the left side of the barrel and tapping into the receiver just behind the barrel nut on the side vice running on top of the barrel and into the front face of the receiver!
That was the original design until they ran into cycling problems with it and decided to switch it to the top of the barrel and into the face of the receiver.
You can see it in The Black Rifle collectors series book.
 
So far we've heard about gas tube locations, charging handle locations, bolt carrier dimensions and larger buffer tubes to accommodate the larger bolt carrier.

But with the exception of the larger buffer tube receiver at the back of the lower receiver (the gun), none of those others things have any influence on the design of the lower receiver.

So, what is different between an original AR10 lower that predates the AR15, and an AR10 lower that comes after the AR15?

Is there any real design difference?
 
The original Ar10 in semi-auto only is so rare there is only one recorded rifle in Canadian history and it was brought to court by the RCMP as being full-auto. It was returned to the owner as a non restricted firearm.
I have the blueprints for the old original AR10 receiver but uppers are non-existent, as are lower parts kits.
 
fenceline said:
They made the mistake of letting the Sig in. It was prohibited all along. They just didn't catch it until years after they classified it incorrectly, and then looked bad causing the CPC to act.

The Sig is prohibited by name. Now certain versions of it are exempt. Due to RCMP bumbling.
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False. Sig decided to make the guns specifically for Canada on tools for Canada that they say they based off the 540. The 550 is a 540 variant. Take a 540 change the gas tube and put some rubber around the charging handle area and the guns are almost completely identical. It is not illegal to put features on a 540 that come from the 550, but yes it does make them identical.

Putting a Camaro engine into a mustang doesn't mean the mustang is now a Camaro.

onetwentyish said:
I think it should mean I need to save for an SR-25. :p
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SR25 bolt is designed for AR15 recoil spring tubes. So its based off the AR15.

Not going to work.

Knights armament would have to make a Canadian version with the original AR10 bolt carrier and no ar15 swappable parts.
 
Scarecrow said:
False. Sig decided to make the guns specifically for Canada on tools for Canada that they say they based off the 540. The 550 is a 540 variant. Take a 540 change the gas tube and put some rubber around the charging handle area and the guns are almost completely identical. It is not illegal to put features on a 540 that come from the 550, but yes it does make them identical.
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Um. No. While the 550 was designed after the 540, and the lineage is there, the sig 550 and it's variants are named in the OIC as prohibited.

The swiss arms is a 550 design. Compared it beside the Famae 540 and this is obvious. The oic existed long before the swiss came into the country.

Besides the pistol grip, there are no interchangeable parts between the 540 and the 550. You can see this when you compare a Famae 540 with a swiss arm rifle.

But this thread isn't about the swiss, let's keep it on the ar10.
 
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hbean said:
Only the owner of the rifle can tell you the differences and it is pretty safe to say he is not on this forum.
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Blueprints. Pictures. There are ways to speak to technical features without having the actual item.

Again, what is different about an original receiver vs a modern one? Differences in gas tubes and changing handles on an upper don't change the classification of any gun's regulated lower receiver.
 
Scarecrow said:
The original Ar10 in semi-auto only is so rare there is only one recorded rifle in Canadian history and it was brought to court by the RCMP as being full-auto. It was returned to the owner as a non restricted firearm.
I have the blueprints for the old original AR10 receiver but uppers are non-existent, as are lower parts kits.
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The AR10 mentioned above was declared nonrestricted due to an error made by the prosecution. I have seen that particular rifle and it is a standard Sudan contract gun converted to semi-auto by neatly milling off the selector marks and placing a roll pin in the sear hole. Sure, there is paperwork saying it is nonrestricted. But recent history shows that such a status can be revoked at any time.
 
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