But I haven’t seen any detailed minimization mods around.
Soooo.
I decided to have my first writup on that.
Step 1
First, you get your NF and draw a line from the base of the yellow part to the light grey angle between the ammo holder and the trigger guard. Be sure to mark both sides.

Then you take your hacksaw and cut along the line you just made.

Then remove the screws, to disassemble the blaster.

Discard the smaller parts of the shell.
Step 2
Take out the plunger tube.
There will be about 4 pieces that make up the barrel assembly.
Take out these 2

Then take the piece with the dart peg

and use your dremel or knife to remove the center, ending up like this.

Then take the air restrictor piece and make it like this.

Now, rough up the places where the two pieces meet.
Then glue them together with your favorite glue.

After that, wipe up the lubricant from the inside of the plunger tube where the barrel pieces fit on. Then rough up where the barrel piece meets the plunger tube and glue them together like this.

After that, take out your PVC coupler.
Then, you cut off the nub here.

If your coupler doesn’t fit over the lip of the barrel piece like this,

use a knife to shave down a bit of plastic from the inside of the coupler.
Once it fits, rough up the base of the coupler and where it will touch the barrel piece.
Then glue it up.

Please don't post for a minute
Step 3
The newer NFs seem to have two-piece plungers like this.

The screw supplied is rather short, so we will use a longer one.
First, mop up the lubricant from inside the plunger.
Then, put some hot glue inside the plunger. Carefully, place the plunger halves together, being sure to line up the nub with the notch.
Put the catch, then your spring(s) of choice on the plunger rod.
With the longer screw, attach the plunger to the rod.
If you have a long enough screw, it will protrude. Put some glue over the protruding end to give it more grip.

Then take some foam craft sheet and trace the plunger.

Cut out the circle.
Glue the craft sheet circle onto the end of the plunger. This will cushion the plunger from its impact with the barrel piece.
Now, you will need to widen the barrel hole.
Step 4
Now you are almost done.
First, trace around the coupler and cut out the hole.

Replace the catch spring if you think it necessary.
Then put the plunger in the plunger tube, and put them in place.
Squirt hot glue between the plunger tube and the shell near the coupler. Once it dries, it significantly aids the screws in holding the plunger tube in place.
Now take the top piece of the shell and apply lubricant where I have shaded.

Then screw together the two halves of the shell.
After this fill the gap between the shell pieces with hot glue.

This strengthens the frame for longer life.
Now, you have a couplered, minimized nitefinder.

Questions? Comments? Flames?