Introduction: Create a Long Range Marshmallow Rifle

Picture of Create a Long Range Marshmallow Rifle

A guide on how to create an effective, powerful, and comfortable marshmallow rifle.

I used my own measurements and polished the process to make a much better gun.

This guide is a tribute to the one found here which inspired this new rifle.

As a disclaimer I hold no liability for anyone hurt while using the gun or following any part of these instructions. Wear eye protection to prevent pain and possible injury. Getting shot in the eye hurts (a lot) and you use these at your own risk.

With that finished, enjoy making the gun.

Step 1: Obtaining Parts

Picture of Obtaining Parts

To create one marshmallow rifle you will need:

1/2 inch PVC pipe.
(2) 1/2 inch T-Brackets
(2) 1/2 inch Elbow brackets.
(2) 1/2 inch Caps.

(1) Hacksaw
(1) Measuring tape or Ruler
(1) Sharpie/Marker

I got all of my parts at Lowes and already had the hacksaw. The total for me was around $6, as I already had the tools (minus the marshmallows).

As a big note, make sure that you get non-threaded pieces.

For those wondering why you need the caps, they create pressure in the gun. There are three ways the air could go out: the two handles and the barrel. When the handles are blocked the pressure has one way out. And thus, a marshmallow gun.

Step 2: Measuring

Picture of Measuring

This is the most important part. Cutting the pieces.

Use your measuring tape and mark the appropriate lengths with a marker. After it's marked feel free to use that hacksaw.

When you are finished you should have the following.

(1) 23" barrel
(1) 13" mid-section
(2) 1 1/2" connectors
(2) 3" handles

Step 3: Cutting the Pieces

Picture of Cutting the Pieces

I use a wooden block, and my shoe to hold the pipe steady. The purpose of the wood is to make a clean cut through the pipe without hitting the floor.

Commence the hacking and cut your pipe to the provided lengths. You will need to clean off the edges of the cuts (inside and out) when finished. Otherwise you will be blowing out PVC shavings.

When your foot is on the pipe you will need to step hard. I also hold the back end of the pipe to keep it steady. The more still the pipe, the faster and cleaner it will cut.

Step 4: Connecting the Dots (Pieces)

Picture of Connecting the Dots (Pieces)

Here is the main layout for the gun. It should be pretty straightforward to putting the pieces together.

Step 5: Painting the Weapon

Picture of Painting the Weapon

You could have a boring plain white marshmallow rifle with printed text on the side.

Or you could have a personalized killing machine. This step is optional, but adds an extra "cool" factor and just feels better to hold.

On all PVC piping there is text printed on pipe. This marks things such as the pressure the pipe can handle, the time and date it was created, and the manufacturer. If this text is on when you apply spray paint it will bleed and look terrible.

Prepping & Painting:
The solution is to use sandpaper to get rid of the text. Any grit paper will use, but this will take a bit of sanding. After you've finished you can spray the pipe.

I use Krylon Fusion Spray paint. It sticks very well to plastic, and dries fairly quickly. You can create whatever you wish to dry the pieces, but as with anything painted you don't want it to be marred by touches. I have a spare paint roller that I use to rotate and hold the piece. Use whatever works for you.

For those of you who don't have much experience spray painting, hold the can back at least 6 inches. It may seem like you're wasting paint but multiple lighter coats always look better than one hastily applied.

Step 6: Finished!

Picture of Finished!

Now you have your very own marshmallow rifle to pester your friends with. Feel free to use your imagination and improve upon my design, and I would love to hear them (just leave me a comment).

Some extra tips:
If you put in three marshmallows at once and blow hard, you will essentially create a shotgun. And if you clog the barrel just take off the pieces and clean it.

Fresh marshmallows fire better and shoot farther. In addition they don't have as much spin.

The angle you tilt the mouthpiece at will greatly affect how effective you can be with your rifle. It's best to hold your main hand against your cheek.

When you hook multiple guns into each other the power becomes greater. Though it is impractical to use in a war time, it's fun to experiment with.

Now go start some wars and have a great time.


jfrancis17 (author)2014-12-22

I made a Nerf sniper using essentially the same technique. I'm able to head-shot hidden from downstairs through the upstairs banister easily. Roughly a 50yd snipe.

bumpus (author)2007-06-02

what i did was use canadian nickles to block the vertical tube for the handle so when your puttin the PYC in to the bracket things put a nickle in there so mallows wont fall down there but they have to be CANADIAN NICKLES b/c U.S. ones are too small

jfrancis17 (author)bumpus2014-12-22

You couldn't be more wrong. The US nickel is the PERFECT size.

QuackMasterDan (author)bumpus2007-06-03

The main reason I created this guide was because I found the standard marshmallow gun to be annoying. So I made one that feels better to shoot, and looks cooler too!

can you use a hacksaw

QuackMasterDan (author)2 stroke 2009-05-02

That's what I used in the guide, they work just fine.

proffesor cuddles (author)bumpus2008-01-05

I used cotton balls

patrick44332 (author)2009-09-13

Hey freeze the marshmallows first for more fun

your dog (author)patrick443322009-11-30
wet marshmallows are also extremely fun. I snipped a dude from indoors and it stuck to his glasses.
rofl pwned (author)2008-10-04

this is pretty bad,too. the barrels are too long. u need to block the handle holes w/ syran wrap,etc.

PyroMaster007 (author)2008-04-25

it's cool, but for us with the smaller lung capacity, the long barrel just causes a hassle, and it doesn't go very far. Being a marshmallow sniper, i would like youto modify this in a way that it is not too big and easy to carry into the random trees. Thanks alot!

I would recommend that you visit the link @ and just modify the barrel to be longer (for range and accuracy). It has a much smaller body and shape; it's up to you to create new weapons and try new designs.

gaara0sama1 (author)2007-12-27

Do you think it would be safe to cut the pipe with an electric saw? I sell these thongs to my friends and they buy alot so I need a fast way to cut the pipe...

JerryMopar (author)gaara0sama12008-03-16

I used my milwaukee sawzall with a bimetal blade, takes like 5 sec to cut through a 1-1/2" Schedule 40 pipe

if you go to home depot, you can buy a pipe cutter for like 9 dollars (they work great!!!!!!) it will save you hours, trust me

Yeah, I found one and it works great! Thanks anyway...

armorwaxer (author)2008-01-20

nice line 6 amp is that the 30w?

Well the funny this is I no longer have the Les Paul or the amp, I sold them to a friend who needed a guitar and he still plays it to this day. I believe it was the Spider 3 30W amp.

QuackMasterDan (author)2008-01-05

I believe you can use just any good saw/blade to cut PVC. It's a pretty soft material, so I believe an electric saw can cut through it. I'm glad it worked out for you, I hope you have a good marshmallow campaign with your new rifles.

Atom1kYak (author)2007-12-25

this look great--I'll have to try making one we just started 'marshmallow-gunning,' but we painted our guns camo--one is white/silver, and the other is white/black/pine-green. i'm trying to designed a double-barreled version right now, but it's not coming together quite yet. i'll post it if i can get one that works. anyways, excellent guns. i think i'll have to ad a bipod to one if i build it...

like quack master dan said, double barrels are hard to work out because you would have to blow twice as hard

QuackMasterDan (author)2007-12-25

Just some food for thought, with two barrels you will have half the breathe power per marshmallow. As already with one marshmallow there's a maximum effective range of about 25 feet, cutting that in half would make things difficult. But kudos on innovating in paint, camouflage seems much cooler than plain black or blue. Good luck on whatever you do, and enjoy the madness of marshmallows!

QuackMasterDan (author)2007-12-06

The full range rifle has more power per marshmallow, and better precision. James is correct that it takes more air (breath power) to expel the marshmallow. Though once it is out of the barrel it is faster and longer-range to boot. The main reason this specific model was created is I found it to be the most comfortable to hold/fire, and thus more fun to use. (I'm 6'1" by the way) I believe it is faster than short-carbine models, but I don't have equipment to actually measure the speed.

JIMIHENDRXrcks (author)2007-06-09

does the marshmallow shoot faster out of the barrel than other models?

longer barrel = more power when it comes out. it also takes more air.

reason being: it has more time under pressure to pick up speed.

assasin (author)2007-06-02

Nice instructable!

Hawaii00000 (author)assasin2007-10-24

i agree

X_D_3_M_1 (author)2007-10-19

yay ff10 rikku in first picture. loved that game

bruce911 (author)2007-09-15

Do you live in Canda? Because the half inch pvc pipe in canada is actually smaller than the half inch in the us.

QuackMasterDan (author)bruce9112007-09-16

In live in California in the USA. The size does not have to be absolutely 1/2" pipe. As long as your joints fit your pipe and they are a good enough size for the marshmallow, you are fine.

Ruikuli (author)2007-08-14

What kind of pipes are those!? I can't find them anywhere nor the joints!

QuackMasterDan (author)Ruikuli2007-08-23

It is just regular PVC pipe, spray painted with Krylon spray paint. You can find it at almost every major hardware store (Home Depot, Lowes, Orchard Supply). The six guns do work, however it takes lungs of steel. Not to mention you can't aim it for beans.

straw hat pirate (author)2007-06-24

did your combination of 6 guns actually work?

Yes the 6 guns hooked together actually did work. Except it took a fair bit of breath power. As for metal pipes, I'm sure you could, but it would be far heavier, take damage and scratches more easily, and cost more.

straw hat pirate (author)2007-06-24

could you use metal pipes instead of plastic ones?

sgt.peanut95 (author)2007-06-04

this is cool but how do u load it do u put it in the mouth piece or the barrel?

You take your mini-marhsmallow, and put it in the mouthpiece. It doesn't matter if it goes around the bend, then just blow and it will work. Blowing harder will generally make your shot be more accurate. In an intense war you'll be reloading like mad.

robertm (author)2007-06-03

do these shoot the big or the small marshmallows?

QuackMasterDan (author)robertm2007-06-03

They shoot the mini-marshmallows. To fire a large one you would need lungs of steel, and that would be weird.

TheCheese9921 (author)2007-06-02

this is the same thing I did to mine (never thought of posting it) really nice

About This Instructable




Bio: I have a passion for tweaking things. Whether it be modding video game consoles, creating custom laser displays, or any creations with lights I love ... More »
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