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colt ar 15 762x39 to 223 help

CORRECTCORRECT Member Posts: 10 ✭✭
edited March 2002 in Ask the Experts
anybody know if i can remove and replace my 762x39 barrel with the colt m4 barrel and use the same gas tube? there both 16in barrels, and can i just replace the 762 bolt with a 223 bolt and use it in the same carrier, i need help with the the questions before i buy the new barrel and bolt! thanks
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Comments

  • v35v35 Member Posts: 12,710 ✭✭✭
    edited November -1
    Do you have the tools?If not, it pays to sell the 7.62x39 upper and buy the M-4 upper.The gas tube should be the same if both barrels are the same length.Just the barrel and bolt need changing to change calibers.
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  • CORRECTCORRECT Member Posts: 10 ✭✭
    edited November -1
    thanks for the reply, yes i can come up with the tools, will a bushmaster bolt work in the colt carrier and with the colt m4 barrel? or do i have to use a colt bolt? if so who has just the complete bolt, the colt 762 bolt and carrier i have are like new, so replacing just the bolt seems like a good idea!
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  • v35v35 Member Posts: 12,710 ✭✭✭
    edited November -1
    Carriers are universal and will fit any AR . Just change the bolt.An interesting conversion if you have the 7.63x39 bolt and mags is the 6mmPPC which is a super accurate cartridge. Barrels are available from Olympic. At one time I wanted to make up a 6mmPPC and could have used the 7.62x39 bolt but found a 6mmx45, which is the 223 necked up to 6mm,with dies cheaply. The PPC is better and a little faster.
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  • CAPPERCAPPER Member Posts: 139 ✭✭
    edited November -1
    I agree with v35 :"sell the 7.62x39 upper and buy the M-4 upper"
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  • CORRECTCORRECT Member Posts: 10 ✭✭
    edited November -1
    ITS STILL UP IN THE AIR WETHER TO SALE THE 762X39 UPPER COMPLETE AND REPLACE WITH THE M4 UPPER COMPLETE, ANY IDEA WHAT THE 762 UPPER IS WORTH? ITS IN REALLY GOOD CONDITION ONLY 140 ROUNDS OR SO THOUGH IT.
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  • v35v35 Member Posts: 12,710 ✭✭✭
    edited November -1
    See the www.ar15.com website before you make your decision. It's the source on AR info.
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  • carbunclecarbuncle Member Posts: 1 ✭✭
    edited November -1
    I have an original Colt 7.62 x 39 lower with a .223 upper. I was thinking of converting it back to 7.62 x 39, but did hear that these had lots of trouble feeding. The person I bought mine from said that was the reason he changed it to .223. If you decide to sell your upper and magazines, list your email address and perhaps we can get together.
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  • CORRECTCORRECT Member Posts: 10 ✭✭
    edited November -1
    still up the air about swapping, Im going to try a couple of new mag and see how things go, feeding can be a problem but when its on it a nice load to shoot, one way or another im going to put together an m4, what upper do you have?
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