Bought my SU16A in june of 2010. Love the rifle. However, because of the lightness of this rifle, I get a fair amount of muzzle jump. I wanted to make the entire gun better, so I consulted a trusted Smith. He suggested I install a Talon muzzle brake, work the trigger down to three pounds and put a decent scope on. So I had him do the work after providing a Aim Point 4X16X40 scope. Took about three weeks because the barrel needed to be threaded, but, now that I have it back, This rifle rocks big time. I can hold under three quarter inch groups from the bench at 100 yds.. their is almost no recoil and the trigger breaks very clean. The only other change I'll make is to put a forgrip and after market bipod on. I have two different AR's and neither on will out shoot my SU16 from the bench. I will post pics soon. Hope this helps someone looking to improve their's.