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Posted: 8/30/2004 8:27:58 AM EDT
Can my bolt and carrier work in any upper that is mil. spec.? I have a colt sporter II pre ban with A2 handle. I would like to have a flat top but dont want to buy a whole new one. So my question is will all the parts from my old upper work with my new? Thanks in advance.
Link Posted: 8/30/2004 8:36:13 AM EDT
As your replacing all the old parts (barrel, FSB, delta ring, snap-ring etc...) into a "new" A3 upper receiver, YES this is okay to do.

FWIW, while one can use an old b/bc in a complete new upper (note: new receiver/barrel/barrel extension, etc...) and it would probably work, this would NOT be something I would recommend, however if I'm reading your post correctly, you should be okay. As your old b/bc has already been running with the old barrel and barrel extension, that'll be on the new upper receiver.

Swapping bolts between different uppers CAN be done, but I DO NOT do this, not in my rifles. Each has it's own dedicated b/bc/ch.

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