I noticed a replacement Krag rifle barrel offered by Gun Parts Corp.
Does anyone have any experience with the product in terms of quality and or have any specific knowledge of problems with fitting the barrel or other concerns that may affect performance once it has been installed.
Thanks, Brian

I'm spreading second hand information.  One of the fellows on the 30-40 KRAG The Great American Rifle facebook page, who rebuilds Krags has used them and reported they worked well.  The man's name is Richard Ling.  He is using both Numrich and the Criterion barrels available from the CMP.  IRC he said the barrels from Numrich come with the front sight stud installed.  If you use the search function on the left the FB page, you can find Richard's post.  CMP sells both full length and carbine barrels.  However the sight stud is not installed like the Numrich barrels.  Numrich barrels come already blued, Criterions in the white.  To finish fitting either one, you'll need a chamber reamer too.  Those can be rented if the rental folks have one, or bought off ebay.

Just type Numrich in the search box and his post about the Numrich barrels will show too.  When Criterion first started with their Krag barrels, a lot of shooters were unhappy.  Guys were looking for .308 barrels and sometimes got .310 barrels.  Criterion tightened up quality control after that.  Numrich I don't know about.

Thanks for the information, I noticed the GPC barrels were finished with the front site post in place.
The last CBI barrel I installed was for a P14, the milled slot for the front sight key was a few degrees off from the index mark. Luckily the milled slot for the extractor was generous enough that there was no interference when final rotation was met.
I was concerned that with the gpc offering, there would be more than a few problems during and after fitting.
I think I'll stick with the CBI, all the other barrels I have sourced from them have worked very well.