Front sight. Doubles as a great home defense gun just by changing out the choke. I have been quite pleased with mine. Walmart often has them in the $180 range. Mine has a youth model 20 gauge I have also debated on buying for general family use and my 7 yr old to grow into.

I'm pretty sure Fatboy (Bob M) had one and had issues with it.

I'm all for a bargain but when it comes to my family's defensive needs, I hate to scrimp!

"My impression was that the Pardner is a pretty decent shotgun for the money. It could stand a little refinement; the trigger was gritty as hell and the base of the sight bead just barely protruded into the bore, perhaps enough to queer the patterns a little. None of these are problems for the hobbyist gunsmith. I am tempted to buy one, clean up the rough spots and have a set of choke tubes installed."

http://www.thesixgunjournal.net/hrs-pardner-pump-protector/

Mossberg YMMV.