Yes. You can.
I've received the Y2 Trial scout The Inward Lamp as a drop last week with one of my Scout Rifle bounties. The Burning Eye is the Y3 scout and it has wrecked me. But that mostly is the adept version which can only be received by going flawless.
I have the auto Rifle Vision Stone (Adept) but I haven't used it much. Not a big AR guy.
I actually put some time into getting the scout rifle bounty done last weekend.
Had to knock a fair amount of rust off my Mida and get my PvP brain turned back on again, but as games went on I started getting back into the swing of things.
I got the bounty done and what was my reward??
NL Shadow 701X. Meh. It has an ok roll, but it wasn't what I was hoping for.
I was hoping for the trials scout. Guess I'll pick up another bounty to give it another go.