Help Me Identify This Pistol Barrel

I have come into possession of this barrel. At first, I thought it was a Glock barrel, and it has the same dimensions as a Glock 19 barrel, and the lower tang on the barrel has the "step" profile that looks like a Glock, but the rest of it, including the "9MM" stamp on top and the semi-circle tab on top of the barrel look like a S&W M&P. I own neither a Glock nor a S&W MP, so the only frame of reference I have had was a trip to the LGS across the way, and the thinking was that it was either a Glock 19 or some flavor of S&W MP. Any input would be greatly appreciated. Here are the dimensions:

OAL from the tip of the barrel to the outer semi-circle tab = 3.955
Barrel Diameter = .59 (entire length of the barrel)
Chamber width (outside squared off area) = .5955
Semi-circle tab width = .398

Kind of puzzled as it has characteristics from both S&W and Glock (I know they are very similar anyway). If it is a Glock 19 barrel, I might do an 80% lower. Not sure what to do with it if it is an MP barrel.

Thanks in advance!

Hmm, from the pictures I can find, the "steps" and rake of the lower lug are wrong and the stamping is on the side, whereas on this one, the "9MM" is on the top.

Glad to see I am not the only one bumfuzzled by this thing!

WestKentucky said:

I have seen that stamped barrel before. Springfield XD I think. I’m no slide gun guru though...

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once0217 said:

That is a smith and wesson SD9VE barrel. Looks identical to my SD40VE. The font and LCI is are identical as well as the locking lugs.

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Thank you sir!