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Posted: 10/10/2006 4:16:21 AM EDT
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I'm looking into buying a carbine length upper. The one I am looking at is a Rock River 16" middy. However it does not come with the BCG. It is a RRA assembled piece. If I plan to use my RRA BCG from my Varmint, any headspace measurements need to be taken? Thanks |
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I recommend against "sharing" a bolt between multiple barrels. It's not a problem to share the carrier and the charging handle, but at the minimum, buy a bolt to dedicate to the 2nd upper. The reasoning is that each bolt and extension will "break-in" as a pair. This only takes a couple hundred rounds. After that, the wear pretty much stops. By swapping bolts and firing a few hundred rounds, you are breaking-in the bolt to each barrel each time. This will accelerate the wear on both barrels and the bolt. At a minimum, you should check headspace when you swap bolts and every year on a rifle that's not getting bolts swapped around. |
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