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1/25/2018 7:38:29 AM
Posted: 12/23/2001 4:33:26 PM EST
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 4:43:47 PM EST
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 5:52:04 PM EST
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 6:36:07 PM EST
Thanks for the help guys!!!
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