Need some advice on a stuck BCG in a loaded AR

[02ducky]

Calling Doctor Bert. Probably worth s conversation with BP tactical for an idea too. Good luck.

[Skip]

If you think the buffer detent is part of your problem, you could push it down with a screwdriver and use a shim. You can fabricate your own from a soda can--might need to fold it over.

Outside of that, you may want to have BP Tactical take a look.

Good luck! Please let us know how you get it resolved.

[hatidua]

have BP Tactical take a look.

that'd be the option I'd select

[spongejosh]

Can you knock out the takedown pins with a drift or a punch?

[DangerLee_Industries]

Come on over tomorrow PM sent...

[BPTactical]

Sorry I didnt get in on this one earlier, felt like crap yesterday and didnt pay any attention.
OP-You have taken reasonable means to clear the problem to no avail. STOP, especially if you suspect a live round is in the chamber.
I am going to take a wild guess and say the BCG is hanging up in the barrel extension because the extractor is stuck out, possibly due to debris getting wedged under it.
But, without getting my paws on it that is all I can do, guess.
Come see me if you like.

[Brass]

If you're using reloads: did you chamber a round and attempt to eject without firing it? If so, this is typical of a brass case that has not had the shoulder pushed down far enough when resizing. Check the ammo from that lot with a case gage or RCBS precision mic. At least, that will help you narrow down the possibilities what is stuck and where.

[10mm-man]

Maybe someone said this already but; couldn't you take a pair of needle nose pliers (closed), insert in the back of the bolt, push in and left? Or if you think the pliers might be to long, and might strike the firing pin; use a small bar of some sort that will fit into the back of the carrier just enough to torque on it.

Maybe measure the length of the pliers 1st to make sure they won't hit the firing pin.

[buckshotbarlow]

Exactly, had to do just that several times.

real real hard several times...

[ruthabagah]

Update: thank you for all the members who offer their help. Colorado_hack was able to free the bcg. Looks like I was sold an ar-10 buffer spring and silly me did not see the mistake when assembling the lower... to much pressure on the bolt got it stuck with a severly bent 5.56 ammo.

Lesson learned.