I did search.
I have more projects than bolt carriers.
Is there anything wrong with swapping bolt carriers among different uppers if I leave the bolt assemblies and charging handles with their respective barrelled uppers?
Thanks in advance.
There is nothing wrong with keeping the bolt with the barrel and swapping carriers. Check gas ring fit when you do and think about keeping a spare set of rings handy
It is my intent to keep spare rings and other parts on hand.
I also intend to keep the firing pin, retainer pin, and cam pin with each bolt that remains with each barrel.
Edit:
…and I intend to check gas ring fit with each swap.
Why not buy another carrier?
Exactly, too much BS, why make it into a science project:confused:
I’m currently running a BCG between two of my kids’ rifles due to the fact that I am on eternal backorder on a BCG I ordered last month ETA somewhere near May. I’m not willing to pay $210 for one in EE, so I will wait. Even if I was on BCM’s notification list I wouldn’t make it to the computer in time to get one. None available to buy locally either.
Keep putting your name on the list i have been notified twice in the last week they have some in. I was inot in a position to get one. So i linked my email to my phone so next time i get the notice i won’t miss it.
I talked to bcm, and they said since they manufacture there own bolt bolt carrier groups, assemble, and test fire in house they will put some up every couple days. So if you keep trying you should get one in a week or two.
I just wish they’d let us backorder one and ship them. Is there a different list than their standard mailing list?
im pretty sure that bcm had their bcg’s in stock yesterday. checked back this morning and they were out of stock again. you definately need to keep a close eye on them. its hard to source any quality parts now-a-days. everyone is buying them up so quickly.
Oh, I certainly will.
I need a few carriers. I was just interested in shooting some new builds with FA carriers prior to my acquisition of the last parts.
Come on.
Where’s the science project?
Where’s the BS?
I was just looking for a more knowledgeable, reaffirming (or dissuasive) opinion before I went ahead and started playing LEGOS with the parts. I understand that it does sometimes matter greatly what you do when you start swapping things around among weapons, handguards excluded. 
A few weeks ago BCM offered their carrier assembly online -and it was in stock! Shortly after it went out of stock they removed their carrier assembly from their online offering.
If they still offered their carrier assembly online and had it in stock occassionally I would purchase a few.
You can do it and it wont hurt anything. Some folks like to marry one BCG to One Gun/barrel. And when they clean them, they dont swop them around. Its all good, just swop till you get a chance to buy a BCM for reasonable.
+1
This.
The bolt and barrel extension wear together (the bolt much more than the barrel extension, obviously). I like to keep my bolts married to my barrels after anything more than a few dozen rounds downrange. That’s just me. Guarantees I won’t have any headspace issues down the road.
Swapping carriers is much less risky.
They sold out in least than 2 hours. They have come back in stock twice this week, and both time hold out in less than 2 hours. The good thing is they get them in a few times a week. You just have to ne quick to get one.
[QUOTE=catargadelendaest;1470319]Come on.
Where’s the science project?
Where’s the BS?
I also intend to keep the firing pin, retainer pin, and cam pin with each bolt that remains with each barrel.
This sounds like bs & a project to me, I would just shove the BCG into the other rifles and test fire them if I must until I obtain a BCG for each weapon instead of playing musical bolts and pins.
The website says they will sell out in minutes–and that seems to be true. I managed to snag one from BCM last week, but it wasn’t easy. I kept adding myself to the “notify me” box and I would either miss the email and be too late by the time I saw it or would get it and check within a few minutes and they would still be gone.
When I finally did get one, I camped on the BCG page for a couple hours late one afternoon and literally kept refreshing the page every few minutes until it popped up as “In Stock” and ordered. When I did that I also got the email notification that they were in stock . . . but that came about 8 minutes after I received email confirmation for my order. So even if you get the email that they are in stock–it may be too late to actually grab one or time may be VERY short. Just have to keep trying. If you are OCD enough you can get one. 
I can’t find a notify me box anywhere. Hell, all I want is one to finish a rifle for my daughter. Looked at Ebay…$305!!! is a current bid on a BCM BCG…WTF??
This is the page for the BCG that I used . . . if you go there look for the green text below the Add to Cart button and it will say “Email Me When Back In Stock.” That will go to a page with a box to enter your email. I think you have to do that every time it goes out of stock, but I could be wrong (I kept doing it just to be safe).
But as noted, I found that if I waited for the actual email . . . I was too late by the time I got to the site. You may have better luck.
http://www.bravocompanyusa.com/ProductDetails.asp?ProductCode=BCM+Bolt+Carrier+Group+AUTO+MP
There are other BCG on there for less. There is an even a BCM BCG with a $280 buy it now with free shipping.
I don’t know who bid $305, but they are not doing this intelligently.