If i bought this http://www.midwayusa.com/product/672244/yankee-hill-machine-qds-quick-deploy-flip-up-hooded-front-sight-handguard-height-ar-15-flattop-aluminum-matte?cm_vc=wishList YHM front flip up sight could i switch out the front sight post for this http://www.brownells.com/.aspx/sid=243/pid=24976/Product/AR-15-M16-HIGH-VISIBILITY-ROUND-TOP-TRITIUM-DOT-FRONT-POST-SIGHT?mc_id=100500&gdftrk=gdfV21820_a_7c187_a_7c1563_a_7c006111181_d_006111181_d_10866&avad=avant trijicon tritium dot front sight post?