This is the same barrel i have on my stormer, just longer. Its a bit snug with the barrel shroud but it fits my stormer just fine. Hope this helps

https://www.amazon.com/dp/B0007KWS58/ref=cm_sw_r_apan_i_D2TK1M9V4HBYGJK0Z7R5?_encoding=UTF8&psc=1