Awesome stabilizing fin brace! - Strike Industries AR Pistol Stabilizer Brace

For the price, this stabilizer fin brace is really hard to beat! The adjustable set screw is perfect when combined with a dimpled pistol buffer tube, such as the one from KAK. This means that you can set the length of pull for exactly what you want, without worrying about it sliding forward or twisting to the side. Plus the QD sling swivel mount is in the perfect location for a two-point sling configuration. If you can't or don't want to spend the money on an adjustable brace, I would highly recommend this one over any of the other options!