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Posted: 9/17/2004 2:19:21 PM EDT
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Without trying to oversimplify this..... As long as your barrels are both in good condition and within spec, and your bolt is in good condition, and within spec, you can swap bolt/carrier assemblies between two upper all you want. This comes up all the time. The issue is, that a bolt wears, and a barrel wears, and typically, it is adviseable to have a bolt for every barrel. However, it is not necessary, and as long as your barrels/bolts are not overly worn or out of spec, then you should never have any sort of problem with swapping. |
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Likey not, but some say you could have accelerated wear due to differing wear patterns of the two uppers. If both uppers started out new, and your bolt/carrier started out new, likely you would not have a problem. I have swapped bolts and bolt carrier assy's among rifles in troubleshooting. Never a problem, nor did I have a fear of a problem. STILL, it would be best if you bought a bolt carrier assembly for each upper. I can see being on a budget, and using one bca for both for a while, until you safe your pennies for another. Won't hurt a bit. |
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