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A homemade Airsoft gun can be constructed in a couple of ways -- either with your own breath as a source of power or an air compressor. Either method will take a matter of minutes and will result in a powerful tool. See Step 1 below of your preferred method to begin.

Method 1
Method 1 of 2:

Quick and Easy

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  • A small container with cap (medicine bottle, 35mm film container, small soda bottle, etc.)
  • Drill with 5/16" drill bit
  • Hot glue gun (optional)
  • A plain, straight-tubed ballpoint pen
  • Airsoft pellets or BBs
  1. An old pill bottle, a film container, a plastic bottle of Coca-Cola, whatever you have lying around (with a lid!) will do. Be sure to wash it first, though; you'll be putting the side of the bottle in your mouth.
    • One hole needs to be centered on the bottom and the other centered on the side.
    • A 5/16" drill bit is best for a standard pen, but it can vary. Choose a drill bit that matches the width of your pen, as the pen will be inserted through the hole shortly.
  2. You know, the kind they give you at hotels and seminars for free. A straight-tubed, not fancy, ballpoint pen with no frills. There are three steps to this:
    • Unscrew the cap surrounding the ink point.
    • Take out the guts -- the ink, the spring -- to create an empty barrel for your BBs to fly through.
    • Ram out the lid at the top with a screwdriver or other slim, pointed object.
      • A sturdy straw will also do the trick.
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  3. It should protrude about 1/2" (1.25 cm) into the inside of the container. A regular pen should fit fairly snugly into a hole drilled with a 5/16" bit.
    • It's a good idea to hot glue the barrel to the bottom of the medicine bottle. Just put a ring of glue around the pen where it meets the edge of the container. This way no air will escape, pressurizing your BBs.
  4. A little less than half full is ideal.
  5. Experiment with distance and aim -- you should be able to go a considerable distance away (the length of your garage, say) and still maintain direction and velocity.
    • Do not inhale with your mouth up against the container. You could inhale pellets and choke. Instead, take a breath away from the gun and then blow inside.
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Method 2
Method 2 of 2:

Using an Air Compressor

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  • A soda bottle with cap
  • 1/4" quick-release air compressor adapter
  • Drill
  • Air compressor blowgun
  • 7mm x 6" long brake line
  • Airsoft pellets or BBs
  1. By blowgun, we mean one that attaches to an air compressor -- not a blowgun you would use to throw poison darts into your nearest enemy. Screw the adapter in until it's sturdy and tight. [1]
    • The nozzle of the blowgun (where it would connect to the tube of an air compressor) will twist out counterclockwise.
  2. It should be about 1" (2.5 cm) below the bulge in the top of the bottle. It should also match the size of the nozzle of the blowgun that you just threaded out. [2]
    • If you refer the method above, you'll see that a regular pen requires a 5/16" drill bit. Your nozzle is probably just a bit bigger than that.
  3. This is the trickiest part:
    • Put the nozzle into the bottle.
    • With a metal file or other similar, long, thin object, pick up the nozzle.
    • Place it snugly into the drilled hole, threaded part sticking out.
  4. Keep the metal file supporting the nozzle so the weight of the blowgun doesn't dislodge it. Be patient as you thread the blowgun onto the nozzle.
    • Once it's tightened, the blowgun should be sturdy and unmoving. At this point, the soda bottle and blowgun base should be as one.
  5. It needs to match the size of your brake line. It's better to start off a bit smaller and have to make it bigger -- though you could always easily find another bottle cap. [3]
  6. Pull the line through so the entire tube is through the cap, bolts and nut on the exposed end. [4]
    • If available, it's wise to seal the drilled hole on the cap with hot glue. This will also hold the line in place, creating a foolproof vacuum.
  7. About halfway is ideal.
  8. Make sure everything is sealed up nice and tight and attach the base of the blowgun to your air compressor. [5]
    • Alternatively, you can also use a backpack air supply to fuel your gun.
  9. Your gun is ready to start decimating. Just unscrew the barrel to refill with pellets.
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Community Q&A

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  • Question
    Can I put the air hole in the back bottom of the container instead?
    Community Answer
    Yes, that works well, too. I did that, and it shot a little better.
  • Question
    I don't want to carry an air compressor with me. Is there some alternative to the air compressor?
    Community Answer
    An air soft HPA tank. It's a tank of compressed air. This is used by many airsoft players.
  • Question
    Can I shoot gel balls (7mm) with this?
    Anon ymous
    Community Answer
    You might be able to, but only if you use a 7mm barrel, as the gel balls just cannot fit in the 6mm tube.
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      Things You'll Need

      Quick & Easy Method

      • A small container with cap (medicine bottle, 35mm film container, small soda bottle, etc.)
      • Drill with 5/16" drill bit
      • Hot glue gun (optional)
      • A plain, straight-tubed ballpoint pen
      • Airsoft pellets or BBs

      Using an Air Compressor

      • A soda bottle with cap
      • 1/4" quick-release air compressor adapter
      • Drill
      • Air compressor blowgun
      • 7mm x 6" long brake line
      • Airsoft pellets or BBs

      ReIated wikiHows

      • How to Make an Airsoft or BB Gun Target
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      About This Article

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