HungryCat

I will purchase this http://www.chaosus.com/cgi/commerce.cgi?preadd=action&key=EXTENDED_QUAD_RAIL But I am in THAILAND. I think I can buy it by http://www.shopatusa.com/ or http://www.shop-usa4thai.com/default.asp Thank for information .

in this picture http://www.chaosus.com/cgi/commerce.cgi?preadd=action&key=EXTENDED_QUAD_RAIL "top rail extending over 13" in length" I must remove rear iron sight or not compare with UTG http://store.carolinashooterssupply.com/servlet/-strse-251/utg-saiga-12-quad/Detail it not necessary to remove rear iron sight but top rail too high . ( not good for optic mount )