I'm not sure how wide-spread this is, but I finally found a lvl 50 sniper rifle with a stagger bonus, and I have it decompiled and can make more. It has the same damage as a Hasley (14 pts, 5.5 sec re-use), but with a 5% chance of staggering for 10 sec. So, for any of you rifleman/snipers who like Three Round Bursting, this is for you. $i 10 mil each.
Post here, /t WarOmnimonki