Stainless Krieger barrel for M1A/M14 rifles. It's a 1-10 twist, 22" barrel. Looks like a pretty heavy contour but I'm not too familiar with these barrels. It came with a used M1A I bought but I decided to just stick with the factory barrel. The guy claimed it is unfired and it certainly looks that way to me. A few really light scuffs from storage for several years but other than that it appears to be new. Krieger lists their barrels for $370 new. Will sell this one for $270.