A good substitute to this shotgun kit, which is out of stock at B&H Photo?
http://www.bhphotovideo.com/c/product/573977-REG/Rode_NTG_3_Basic_Shotgun_Microphone.html
http://www.bhphotovideo.com/c/product/573977-REG/Rode_NTG_3_Basic_Shotgun_Microphone.html