Well as of late I have been working on improving my old Marlin Papoose. I added a small rail forward of the magazine well. I then called Marlin and ordered up the newer sights for the 70PSS. A fold down rear sight, and the neon orange front sight and base. It was a simple drift out and drift in. HUGE improvement over the old Blocky black sight. I will have to get it back on target, then super glue the sights in place. A precaution I take for all my pack rifles. Little dab of glue on either side of the sight once it's sighted in, gives a bit of insurance over a casual knock that could move the sights. Over all I am very happy with how it came out.