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5/25/2009 6:50:09 PM EDT
I've searched for a while and haven't found a definitive answer to this question.

If I change m upper receiver (swapping A2 for flattop), do I have to headspace it and/or adjust it in any way, or should it be good to go once its on?

Thanks for any help,
-Jason
5/25/2009 6:52:55 PM EDT
[#1]
if the bolt and barrel are the same you should be fine.

5/25/2009 6:57:04 PM EDT
[#2]
Quoted:
if the bolt and barrel are the same you should be fine.



This.

It wouldnt hurt to check it with a go/no go.
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