I have just purchased two Krieger barrels from a gunsmith. These barrels are 1-14 twist 6mm; 1.2" diameter, and 22 inches. Each has about 600 rounds fired. I am going to use one to send to Mike at OTT and have a custom TC step barrel made (6mm TCU or 6mm-250). The other is up for grabs. I will have them in about two weeks (going deer hunting), but if anybody is interested, let me know. I might part with it for a very reasonable price ($275 new) to Single Shot forum readers, before I put it up for sale to the masses. I will probably ask about $125 plus shipping.