Left.
Just like combat shotgun drills, your dominant hand stays on the pistol grip.
Right hand.
Right hand and I'm right handed. It feels more natural to me to keep the left hand on the center of the rifle for a better hgrip and better muzzle control. It's too front heavy and awkward to use my left hand.
Front sight is a ring with a cross hair. For rapid fire I use the ring to centre the target. For more careful aiming, I use the cross hair.
The rear sight is made from an enfield L sight. Cut a slot in the cover and brazed it in placed. Zeroed with the front sight. A very solid and reliable set up. The bolt through the receiver cover keeps is solid.
I like a rear peep because it is so fast to use and gives a max sight radius.
Left.
Just like combat shotgun drills, your dominant hand stays on the pistol grip.