$280 shipped in the US. This is a 21 inch barrel with rifle length gas and 7.7 twist with a 223 Rem chamber. It is .936 at the gas block and comes with a Superlative Arms adjustable bleed off gas block and a thread protector. It has M4 barrel extension. When I cleaned it I used a Sinclair delrin bore guide and carbon rods.
I bought this used last year. The seller said it had about 600 rounds through it. I bought it for a dedicated gopher gun and ended up only going on one trip. With bad weather I only got 25 so I did not abuse the barrel! Since then it has been a range toy. I have put less than 300 rounds through it. It shoots like a Krieger. I worked up loads with 55 vmax and 75 Hornady BTSP over 8208 that shot great. This is a used barrel and has some scratches. I purchased a lighter barrel and no longer need this one, but it is a really good barrel.
My pictures are really bad. I can try again tomorrow with sunlight or just text you more pictures if you want them.