Will this fit the Magnum 450 Speargun?
MIKE D it depends on the thread size on the shaft I believe the jbl tips are 7mm thread
KELLY K These tips will fit most any gun, this tip is threaded for an 7MM shaft with an adapter to 6mm - check your shaft the bigger guns are usually 7mm, if its an 8mm you will need an adapter.
MICHAEL R From what I understand, there only two thread sizes available. Just be sure of your thread size.