OK its 5:30 AM and I am running out to my garage and pullin out my speargun bags to check on trigger mech and barrrel interchangeability?!?!?
No I dont have a problem
Ok it appears that if you swapped the Rabi to the RA you would have to drill a new hole for the pin that holds the Rabi to the barrel and then have to plug the 2 screw holes that are left from the RA trigger mech.
I also think that the Rabi trigger mech will sit further back on the gun as the RA trigger mech kind of wraps the barrel and the Rabi is just a straight plug that goes into the barell ( similar to a muzzle)
I am using the RA Vecta (blue) and the Rabi Steath as examples.
Still not sure on the barrel OD and ID and the wall thickness yet though they look very similar. I also notice that the the Rail are very different the RA being extruded and actually part of the barrel and I believe the Rabi is some type of attatched rail?
The line releases are will come with the trigger mech and handle.
Se its time like these that I am glad I took all my Spearguns out from under my bed and put them in my garage. Beacuse my wife would have been really pissed off if I woke her up to get this information!!!!!!HAHA
Now I can get ready for work.
Good Luck,
Joel