
It has half of a +bow spring in it, it has a Firefly turret on the front, and the handle has been moved to the side for reasons I cannot remember (I did that a looong time ago.)
It gets ranges in the 70's and occasional 80's.
While doing this mod, I took the opportunity to make a writeup on how to add a firefly turret to a gun.
Let's get started.
Rip the turret assembly out of your donor firefly. IIRC, you'll have to unscrew 5 screws.

Take out the screw in the center of the rotating mech and set all though pieces aside for now. Then unscrew the 6 screws (3 in front, 3 in back) from the turret:

Pry the turret apart with a flathead screwdriver:

All this shit falls out. Get rid of it.

Take a fairly long screwdriver, and punch out the peg pieces. You don't need/want those either.

Here's all the parts you should have now:

Here's the shit you don't need:

You also don't need the 6 screws you took out.
Now take a 1/2" drill bit (or a 17/32" one if you have it), and open up the holes in the back of the turret:

SAFETY WARNING: When drilling each hole, the drill bit will want to grab on to the part, and violently rip it out of your hands, spinning it wildly with the drill bit. This happened to me, and you can see where it took a small chunk out of my finger - I was lucky. You need to have a FIRM grip on the part. I suggest using vice-grips or channel-locks to hold on to the piece.
Take the larger pink part of the rotating mech, and shove it into a 1/2" PVC coupler as far as it will go. It will be a very tight fit.

On the other side of the coupler, cut it even with the pink piece:

Now start putting the turret back together, like this:




Then screw it together.
Please wait for PART 2.