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6/21/2017 8:25:40 PM
Posted: 12/23/2001 5:33:26 PM EDT
If I swap uppers, A2 to A3, keeping the same bolt, carrier and barrel is there reason to worry about checking head space?
Link Posted: 12/23/2001 5:43:47 PM EDT
Normally no, but I'd check the cases very carefully to make sure that none of them are showing any bulges or cracks.
Link Posted: 12/23/2001 6:52:04 PM EDT
No, the upper receiver only holds the barrel and provides a runway for the bolt-carrier. Head space will not change, unless you do something to physically alter the chamber length or bolt dimension in some manner. Swap away, and enjoy your new upper.
Link Posted: 12/23/2001 7:36:07 PM EDT
Thanks for the help guys!!!
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