scope maxed out need riser w/ extra MOA built in

[kevin]

my ar15 is maxed out on the scope when shooting past 600 yards. anyone know of a riser with some extra moa built in? ive googled but only found ones that are longer than the upper receiver flat top which is not what i want

[DaCapster]

Is it a flat top Ar? If so LaRue makes a QD with 10 moa slant.

[kevin]

yes its flat top, brownells has one but its longer than the receiver- its expensive and i guess i could cut the front off

ill see what the larue one is like, i bet its expensive too