Nitride BCG Identification

[Swstock]

Is it possible to identify this?

I must have lost track of stuff that Ive bought over the years. I know that it's nitride, that the bolt is marked MP, the extractor spring is silver, it has a black insert and o-ring.

Im going to guess its 9310 since it's not marked c158.

Any input? I'll get pics.

[Swstock]

SmartSelect_20200802-162226_Gallery.jpg

[Swstock]

SmartSelect_20200802-162210_Gallery.jpg

[Swstock]

Additional info:
Nitride bore and gas key. Neither are chrome. The carrier seems identical to some PSAs that I have but I don't see it in my purchase history there.

Bolt is only marked "MP"

[NWcityguy2]

PSA and Aimsurplus are the biggest sellers to nitride BCGs on the market. Aim sometimes does and sometimes doesn't logo their carriers.

[Swstock]

PSA and Aimsurplus are the biggest sellers to nitride BCGs on the market. Aim sometimes does and sometimes doesn't logo their carriers.

Thanks. I compared the MP marking to what's on a BAD enhanced BCG and the marking is the same. I know its not a BAD BCG.

[Disciple]

Brownells has a nitride M16 BCG with a MP bolt. Maybe?

https://www.brownells.com/rifle-part...rod105377.aspx

[ColtSeavers]

Brownells has a nitride M16 BCG with a MP bolt. Maybe?

https://www.brownells.com/rifle-part...rod105377.aspx

I have some of the (now discontinued) HP/MPI C158 nitride M16 BCGs from Brownells and the MP on their bolts doesn't look like the same as the MP on the OP's bolt fwiw.

Toolcraft?

[Swstock]

I have some of the (now discontinued) HP/MPI C158 nitride M16 BCGs from Brownells and the MP on their bolts doesn't look like the same as the MP on the OP's bolt fwiw.

Toolcraft?

Here is a phosphate Toolcraft of mine. Its etched MPI
Attachment 63445

[machinegunman]

Looks like a RCA