The non-ported rifles are preferred over the ported from what I've seen and heard.
Yes they are I've had both and won't have another ported. This is a nice rifle some one needs to grab it.
NRA LIFE MEMBER GOD BLESS OUR TROOPS ESPECIALLY THE SNIPERS! "Suppose you were an idiot And suppose you were a member of Congress... But I repeat myself." -Mark Twain