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9/22/2017 12:11:25 AM
Posted: 1/21/2006 3:23:10 PM EDT
Need some help with this one guys, as the topic states, can you use a 223 bolt/carrier in a 7.62x39 reciever. There is a guy on EE selling a 7.62x39 receiver with a 223 barrel, with no bolt carrier. Can I use a regular 223 bolt carrier on this, if not what can I do with this upper, rather than parting it out.
Link Posted: 1/21/2006 5:46:32 PM EDT
I will try and answer your question. You can use the carrier from the .223 but you need a 7.62x39 bolt in it. The 7.62x39 round is a bit fatter so the .223 bolt won't even come close to closing on it. Now the big question is why would someone put a .223 barrel on a 7.62x39 receiver (actually the only true 7.62x39 is the fancy AR-47 one that is purpose built to accept AK type mags and only AK type mags). Besides the AR-47, there is no such thing a 7.62x39 receiver as far as I know. The normal .223/5.56 lower receiver can be used. I have one in 7.62x39 and it gets real frustrating trying to find mags that feed reliably. This is why the AR-47 was built. DPMS sells the 7.62x39 bolts as well as the other parts you need to run that ammo in an AR. Get the new bolt, make sure its a 7.62x39 barrel and get it running. Its a lot fun when its running.
Link Posted: 1/21/2006 6:46:44 PM EDT
[Last Edit: 1/21/2006 6:49:28 PM EDT by shamayim]
If I'm reading your question correctly, You're asking about a 7.62x39 marked upper that has a .223 barrel on it. If that is indeed what you're asking, the answer is yes; you can use the standard bolt/carrier. The first answer would only be correct if it still had the 7.62x39 barrel on it.

Colt turned out some 7.62x39 conversion kits that had the upper receivers marked w/the 7.62 designation, but the upper itself is exactly the same as the standard .223 piece. The 7.62 marking was only to ID the caliber of the barrel. If someone has rebarrelled that upper w/a .223 barrel, then, except for that stamped marking, it's exactly the same as any other .223 upper.
Link Posted: 1/21/2006 6:51:21 PM EDT
Cool, thanks. So as long as I got a 223 bolt, carrior and such with the 223 barrel I should be able to run 223 in it without problems, in other words the 7.62 receiver itself is the same dimension as the 223 receiver. Thanks guys I appreciate the help!
Link Posted: 1/22/2006 7:32:48 AM EDT
[Last Edit: 1/22/2006 7:33:31 AM EDT by SBR7_11]

Originally Posted By 3154k9:
Cool, thanks. So as long as I got a 223 bolt, carrior and such with the 223 barrel I should be able to run 223 in it without problems, in other words the 7.62 receiver itself is the same dimension as the 223 receiver. Thanks guys I appreciate the help!



Upper and lower is std AR15 parts per drawing...

Chamber of barrel determine caliber.

Carrier is same, for gas operation, just the bolt head has to be matched for the specific caliber.. you not going to use a 223/556 bolt for 7.62x39, case head no fit.... so you need a 7.62x39 bolt.

Hopefully this is a bit more clear than the previous answers.
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