im interested in a TSD Sports single shell loading shotgun on amazon, here is the URL: http://www.amazon.com/TSD-Sports-Airsoft-Loading-Retractable-Stock/dp/B001DHJDWU/ref=sr_1_3?ie=UTF8&s=sporting-goods&qid=1230877063&sr=1-3 but i have a red dot sight with a picatinny/weaver...