Meprolite . . . they are not recommended for the Mountain Gun Barrel, set as low as possible, that gun shoots about 2 inches high at 30 yards - I like it like that. I have at least 6 sets of them, they drop into the factory rear sight and fit the front just fine.

http://www.midwayusa.com/viewp...productnumber=489909

http://www.midwayusa.com/viewp...productnumber=687532