Setting a minum price on guns would seem to me to discriminate against poor people. I would equate that to a poll tax.
+1 to that.
As we've seen, the anti gunners are already trying to increase prices on both guns and ammo to regulate guns out of existance simply through price increases. Case in point, ammo serialization would increase the cost of ammo and in some cases put its price point out of reach to a section of the population. No ammo, no guns.
Setting a government directed price point on firearms is simply a bad idea.