If you want a 300 BLK, AR Stoner 16" pistol length 1:8 chrome moly melonite is on clearance for $59.27. I have one and it will do 2 moa with me shooting irons. Overgassed with supersonic, but so is my carbine length 5.56. they share a lower and I fixed it with a H2 or H3 buffer. I forget which I put in it and I ain't dragging it out of the safe at 1am! They also have their stainless barrels on sale.