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Discussion in 'General Firearm Discussion' started by ikari2_2000, Feb 11, 2011.
If I bought a new upper, do I have to buy a new BCG to go with it or can I reuse my current one?
You cab use your current one but it would be checked in the new barrel with a headspace gauge. I have done this many times and they have always gauged fine, but should be checked. If you were closer, I could do it for you, but......