There were not a whole lot of options on the M28. Barrel length (4" or 6"), trigger (0.265" serrated or 0.400" smooth), and stocks (standard or target) was about it.

There are some very rare factory nickel M28s, but these are seldom encountered and very pricey. There are probably many more that have an aftermarket nickel job which sellers try to pass off as original.

Four inch M28s seem to be a little more popular right now. These are an excellent choice for someone who wants to do a lot of magnum power level shooting. The six inch barrel may be the best choice for someone who seeks maximum velocities.

Price as always depends on condition. You don't often see these for under $400. At the upper end, I've seen an "as new in box" four inch M28-2 with the asking price of $650 at every local gun show for the past six months, but so far no takers.

__________________
You're shy a few manners.