Looks like an "N" to me..
Triggers.. me, I just shoot it.. and shoot it some more, I don't see it as an uber precision sniper weapon needing an adjustable let off, 1/2 pound pull, overtravel and all that, plus I'm used to Mosins, Nagant and Polish P64 pistols and such too.. just me and my opinion....
I guess you could send it off and have a trigger job done as well..
Will recoil for a 20 incher be different than a what? Going from a 20 to a 16.5 inch barrel, the biggest difference one would notice would be the noise level, I don't expect you would notice much recoil difference, or maybe I just have never noticed much recoil difference.