[peskydor]

Biller equips the "36" with two, 9/16 bands with 14 1/2 inch length. If you need more range than available with Biller rubber, drop a line to "internet spearguns" (Bill Kitto). They will ship you bulk rubber for $2/foot. Cut the lengths that you need and transfer the wishbones. Tie off the wishbones ("bridles") with thin nylon cord using a strangle knot. Range of the gun will be 6-8 feet measured from the outstretched fist.