Have a tuned QB78 by Mike Melick. I bought it from a guy that received 2 of them for Christmas. Had 30 shoots through it when I received it. It rest in an AR2078A Custom stock stripped and refinished in tounge oil. Shoots in the 740's. Dan said he had it set up for accuracy. It did that very well. I shot 8 out of 10 shots inside of 1" @ 21 yards with Chinese Peak wadcutters with open sights. Has the fiberoptic front and read sights. $145 plus shipping lower 48. USPS MO or Paypal.