I use a TR Matrix on my Q2. I got my hands on one in December so I had several weeks to hunt with it and I absolutely love it.Before that, I shot the Flatliner Extreme and liked it real well but the Matrix is a nice upgrade.Fit and finish is what it should be.The sight mounts up solid and stays that way.This is one product,I'm proud to say,works as advertised.The only thing I found is that the Nitro light source isn't really a 10-12 hour source but instead is more like a 4 hour source.Also,make sure you do not buy the overpriced light sticks from TR or anybody else for $5 to $8 for 5 sticks when you can buy them straight from the manufacture for $.50 a piece or 50 for $22.