5 Foot Double Barrel Knex Gun

This knex gun is 5 feet long has two triggers and two barrels and two 40 round magazines. It shoots yellow rods. If enough people leave comments that i should post a instructable for it i will. This is my first instructable. I am thinking about modifying this gun to make it have four magazines two on each side so it can hold 160 rods. Do you think i should try?