Who Makes This Barrel?

[Chucker]

Marking under the handguard is "1B13BA OA-M4AH16C 5.56 NATO 1/7".

"MP" stamped near the 203 groove.
16", M4 profile, carbine gas system, appears to be Melonite treated, 0.068" gas port size (via caliper). Who makes this barrel?

[Chucker]

https://i13.photobucket.com/albums/a282/Chuck45/Mobile%20Uploads/20200224_172533.jpg (https://s13.photobucket.com/user/Chuck45/media/Mobile%20Uploads/20200224_172533.jpg.html)

https://i13.photobucket.com/albums/a282/Chuck45/Mobile%20Uploads/20200224_172344.jpg (https://s13.photobucket.com/user/Chuck45/media/Mobile%20Uploads/20200224_172344.jpg.html)

[titan7]

https://i13.photobucket.com/albums/a282/Chuck45/Mobile%20Uploads/20200224_172533.jpg (https://s13.photobucket.com/user/Chuck45/media/Mobile%20Uploads/20200224_172533.jpg.html)

https://i13.photobucket.com/albums/a282/Chuck45/Mobile%20Uploads/20200224_172344.jpg (https://s13.photobucket.com/user/Chuck45/media/Mobile%20Uploads/20200224_172344.jpg.html)

Would like to know the answer to this too.

[GH41]

I guess neither of you know how to use google.

[26 Inf]

I guess neither of you know how to use google.

Help me out, I was curious and did try to use google, couldn't find it using 1B13BA or the whole inscription.

[officerX]

I guess neither of you know how to use google.

Please impart thy knowledge, oh wise one.

Google didn't give me shit.

[officerX]

double tap

[georgeib]

Pretty sure that's a Ballistic Advantage barrel.

[officerX]

Pretty sure that's a Ballistic Advantage barrel.

I'm not so sure about that. Proof?

62696

62697

[Hammer_Man]

Can you give us some background information? Such as who you bought it from, what their description of the barrel is, etc..

[georgeib]

I'm not so sure about that. Proof?

62696

62697I very well might be mistaken. Maybe it's an early production version, before they started the laser engraving?

[GH41]

Please impart thy knowledge, oh wise one.

Google didn't give me shit.

OA = Oberland Arms

[holeshot]

OA = Oberland Arms

Danke