Contemplating a M700 w/ irons for the gf, in place of the custom was planning. Are the factory iron sights on a M700 of around 2003 pretty respectable, just ok, or of token quality? Plastic, metal? Cuz if they're not actually Swampy-grade, best "in the world", maybe will pass on the rifle and stick w/ original custom plan and commit to starting it (wallet quivering). Any opinion?