are ar-15 bolt carriers interchangeable?

Caden

Can I use the same bolt carrier/ charge handle for two different uppers (an hbar and a carbin), or will it decrease accuracy in both uppers because it settles into both?

Caden

cpermd

Yes.
Now,for the naysayers.
cpermd

v35

Yes

joeaf1911a1

Yes. I do the same thing with one bolt and carrier for target setup
and G.I. type barreled type uppers.

4GodandCountry

All military spec weapon systems are interchangeable. Pick and piece as you desire.

When Clinton left office they gave him a 21 gun salute. Its a damn shame they all missed....

chxbix

Then why does my Bushmaster owner's manual say to never use the bolt and carrier in any other upper? Is the BM either to sloppy or too tight to headspace correctly in any upper other than the one the bolt was matched too?

No matter where you go, there you are.

GreenLantern

Probably for liability issues is why your BM owners manual states that you should not do it.

cpermd

For the same reason garbage disposals say "Do not stick hand in here."
Bushmaster is a fairly big wimp about legal things.
Try and order an M16 sear or bolt from them.
cpermd

Laredo Lefty

Liability, or it could be that they want to sell you another bolt and carrier.
--Joe--