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Posted: 10/12/2010 7:25:14 PM EDT
won a GB auction for some AR parts and would like to know, can anybody ID the two thick circular things in this pic?....no, I don't mean the slip rings  the ones between the barrel nut and the FA...I don't think they belong to an AR
the rest of the parts 
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just won the auction, so I don't have anything in hand yet, all I have to go by is that pic...I did send a message to the seller, but haven't received a reply yet
ETA: now that you mention threaded holes...I'm thinking they may be A2 rear sight elevation wheels |
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ETA: now that you mention threaded holes...I'm thinking they may be A2 rear sight elevation wheels That would be my guess by just looking at that picture. Agreed. A2 elevation wheels DO have a flat on them, but only the middle portion of the wheel has the flat. Two complete disks make up the top and bottom, while the center spacer carries the numbers, tick marks, and the flat on 8/3. Quoted:
You guys know too much about A2's  They're a retro rifle...What'd you expect!? 
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well, if they do turn out to be A2 elevation wheels, I'll have to get rid of them right quick.....don't want them turning into a project like spare A1 parts do 
 ETA; my very first post on arfcom was a question on how to install an A2 rear sight, it was answered by QUIB with a link to the tech manuals here
the reason for my first arfcom query 
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ETA: now that you mention threaded holes...I'm thinking they may be A2 rear sight elevation wheels That would be my guess by just looking at that picture. Agreed. A2 elevation wheels DO have a flat on them, but only the middle portion of the wheel has the flat. Two complete disks make up the top and bottom, while the center spacer carries the numbers, tick marks, and the flat on 8/3. Quoted:
You guys know too much about A2's They're a retro rifle...What'd you expect!? Eyes left! |
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the reason for my first arfcom query http://i151.photobucket.com/albums/s147/crackedcornish/StrippedA257.jpg What's that forge mark? And no, I don't know what the "earrings" are. Do tell when you figure them out. |
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the reason for my first arfcom query http://i151.photobucket.com/albums/s147/crackedcornish/StrippedA257.jpg What's that forge mark? I'm wanting to know as well. |
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won a GB auction for some AR parts and would like to know, can anybody ID the two thick circular things in this pic?... They should be threaded on the outer diameter...The indentation/hole is for a spanner to screw then in & out with...I don't know the name for them... 
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the reason for my first arfcom query http://i151.photobucket.com/albums/s147/crackedcornish/StrippedA257.jpg What's that forge mark? I'm wanting to know as well. the "B" = Bushmaster and the "Diamond M" = Mueller Industries ...from what I've been able to find out on the interweb |
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Just an interesting tid-bit, don't know if it really belongs here but I'll toss it in anyway...
AFAIK, the A2 upper receiver can support both the usual 300/800 rear sight and the 300/600 rear sight assembly usually used on "A4" type detachable handles. Naturally, this means you could also put a 300/800 sight on an A4 detachable handle. Might be a neat way to make an A2 retro-rifle that has a rear sight the same as your more modern A4 type rifles/carbines. |
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Just an interesting tid-bit, don't know if it really belongs here but I'll toss it in anyway... AFAIK, the A2 upper receiver can support both the usual 300/800 rear sight and the 300/600 rear sight assembly usually used on "A4" type detachable handles. Naturally, this means you could also put a 300/800 sight on an A4 detachable handle. Might be a neat way to make an A2 retro-rifle that has a rear sight the same as your more modern A4 type rifles/carbines. I don't think the 3/8 sight wheel would work well on an A4 carry handle because it's not deep enough (because of the rail height on the receiver) to support the full elevation adjustments. Also, why would you put a 6/3 sight wheel on an A2? That would make it less capable seeing as how it would only be adjustable out to 600 meters, as opposed to its original 800 meter adjustment. |
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Just an interesting tid-bit, don't know if it really belongs here but I'll toss it in anyway... AFAIK, the A2 upper receiver can support both the usual 300/800 rear sight and the 300/600 rear sight assembly usually used on "A4" type detachable handles. Naturally, this means you could also put a 300/800 sight on an A4 detachable handle. Might be a neat way to make an A2 retro-rifle that has a rear sight the same as your more modern A4 type rifles/carbines. I don't remember if a 3/6 is too short in an A2, but I know you can't put a 3/8 in a carry handle..the elevation lug is too long and it sticks out of the bottom of the handle preventing you from being able to mount the handle to the top of the receiver...took me awhile to find a 3/6 sight to install into a stripped handle I got for cheap, after I found a 3/8 wouldn't work 
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