Saw new 6520 1/9 barrels in SGN from Hopalite (sp?) for $250.00 and J&T Dist. for $270.00. Is that a good price for these barrels? Seemed low when you see Colt M4 barrels asking price of $400.00 on this board. The picture looked like the whole assembly but would the price indicate more parts would be needed? Does anyone know if these are all chrome lined or just the chamber? I would really appreciate any info you all might have about these barrels. Thanks a bunch!