Southern Brisbane Nerf Club

Thursday, 18 July 2013

Nerf N-Strike Elite Firestrike mod guide

The Firestrike is a tiny but mighty pistol, but (as with all blasters) there is room for improvement.

In this guide we'll cover:
- AR removal
- spring tensioning
- air seal improvement
- O ring seating improvement
- plunger padding

Firstly, you'll need to take the blaster apart. The screws are in the left half of the shell and are all the same size, take them out and don't lose them. This is what it'll look like...

Take out this little guy, they have a habit of shooting off into the unknown. Put it with the screws.

Now we need to remove the plunger assembly, it should just lift out leaving behind the LED assembly for the pin-light.

This is what you'll need to remove...

Now take it apart and take out the plunger.

Now we need to remove the barrel and the AR from the plunger tube. Using a pointy tool (don't giggle at that) undo the 2 clips holding the barrel onto the plunger tube. BE CAREFUL!! The clips are thin and can break easily.

Once everything is apart, we need to remove that pesky AR. You could drill it out and make a straight through shot from dart to plunger, but this won't give you much extra (if anything). I chose to remove the AR but leave the rear wall (the bit the plunger hits when fired) intact. It looks like this.

Now hot-glue some foam onto the plunger side of the rear wall. For a stock spring, you don't really have to do this, but, this is good practice, you could also hot-glue the foam onto the plunger head.
This is what mine looked like.

Now we need to stop air from escaping. One place where it does is the O-ring seating. This is resolved by wrapping a few layers of teflon tape around the O-ring seating (remove the O-ring first of course). Then put the O-ring back on and test the fit in the plunger tube, it the O-ring won't go in, you'll need to remove some teflon tape and try the fit again. Once it fits, lube it up with some silicone or teflon grease and put the plunger back in the tube. Avoid petroleum jelly (Vasoline) as petroleum based lubricants can eat rubber.

Now we increase the tension in the spring. There is an extra 9mm of compression left in the spring when the Firestrike is primed. To get the extra oomph out of the spring, wrap some duct tape or electrical tape around the plunder directly behind the plunger head. Keep wrapping until the tape exceeds the diameter of the spring but not the diameter of the plunger head. Then using a craft knife (or something else sharp) cut the width of the tape down to 9mm (measuring from the plunger head). Now lube it up with some silicone or teflon grease and put the plunger back in the tube. Avoid petroleum jelly (Vasoline) as petroleum based lubricants can eat rubber.

Time to put the AR housing and barrel back onto the plunger assembly. Firstly run some rubber cement around the plunger end of the AR housing then insert. Make sure you put the AR housing in right-way-up. There are two teeth on the AR housing the big one goes on the bottom. There are also to teeth with post holes on the plunger tube the one at the front of the tube goes on the bottom (refer to first pic).

Now run some rubber cement around the barrel end of the AR housing and attache the barrel making sure it clicks onto the plunger tube. Allow the rubber cement to cure and reassemble the blaster!

Video Tutorial

Range Test

Pro tip: harder compound darts (W or J) will achieve a better seal

~ Rob

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