Identify this AR15 Barrel?

[GBMaryland]

I purchased this years ago and never got around to using it....

OAL is ~18.5 inches

Back of the barrel to gas port is ~13.5 inches.

.750 gas block section

~.815 under the handguard

.980 chamber area

.720 in front of the gas block

threads are approximate .600 long

Is very nice... just no idea what the deal with the gas system is...

 

[RyanScott]

Rifle gas system.

 

[GBMaryland]

Thank you! It's actually a pretty nice barrel... I have all of the parts and a few boron bolts/carriers... maybe I'll throw it together.

 

[JbBooks]

It’s not an older woa is it?

 

[GBMaryland]

When I sent it to them they told me that they never had the means to do that kind of fine engraving on their barrels.

Otherwise it does look like an older WOA barrel... however according to them it is not one of theirs.

 

[longshot2000]

hard to say. I am guessing the (8) is 1:8 twist. I have not seen it noted that way. I see a lot of barrels. Someone took the time, like a WOA, to flute it. Lack of rust suggests Stainless.