Introduction: Cheap Red-Dot Scope

Picture of Cheap Red-Dot Scope

This is a cheap red-dot scope I made using house-hold materials. The only thing you might need to buy is electrical tape.

Step 1: Materials

Picture of Materials

These are there materials you will need:
1 toilet paper roll
1 Roll of electrical tape (scoth tape can be used, ut will look much better with solid black tape)
1 Pair of Scissors
1 Sharpie, color of your choice (Red for Red-Dot, I used Green in this one)
1 Saran wrap roll
1 Gun to mount it on (I used my Airsoft UTG MK23)

These are house-hold materials, except maybe the electric tape.

Step 2: Putting on the Saran Wrap

Picture of Putting on the Saran Wrap

Cut a peice of Saran Wrap approx. 5 inches by one foot and straighten it out. Take the Saran Wrap and cover one end of the tube tightly. Grab the tape (this part is tricky, it took me 3 tries) and secure the tape so it is tight, and not loose on any areas. I then like to cover the entire roll with the tape, just so it looks cool.

Step 3: Drawing the Dot

Picture of Drawing the Dot

Take the Sharpie you chose and draw a dot or other crosshair on the Saran Wrap that you put on. I chose a plus and dots. You could also cover the side of the roll with wrap and make a dot on one and a circle on the other, that's up to you. You can also use a ruler to find the exact center, but it doesn't work good.

Step 4: Attachment

Picture of Attachment

To attach the scope, I simply taped the scope to the gun. If you gun is real, a spring airsoft gun, or a gas/electric blowback, make sure the tape stops "on the slide" or you will tape the slide to the gun, which isn't good. Make sure the scope is relatively lined up with the iron sights,and enjoy!


takn37 (author)2014-02-04

im sorry but im pretty sure everyone doesnt have a gun in their house

tonic1 (author)takn372014-09-11

i do

crazycommanche=US= (author)2009-03-16

that is actulally not gonna be an acurate redot sight because the scope lenses that a red dot sight have lase emitters that converge in the order for this to work you would need a laser apparutus that can be zeroed in for the right distance.for example that wouldnt work for a high powered rifle because it was show wher the scop is pointed it wouldn tdeal with the arc of the bullet thats how long range shots take place .you got one thin right about this

dude hes making like a 10 cent scope and your criticizing it. I dont think any one here that is actually making it is gonna care if there spring m16 cant hit a target on the left nipple from 60 feet away.

halogirl (author)infinityLAO2011-12-08

nipple hehe

stop being so cynical, its a pistol so its for short range and its supposed to be cheap cos not all of us can afford $50 lazer sights.

iBurn (author)(seabear)2010-04-07

 You'd be better off using the Iron Sights already on your pistol. In order for this thing to be even remotely accurate you could at least put another piece of seran wrap on the rear of the scope and draw another + sign lined up with where the gun hits at a certain range, this "scope" won't be accurate unless you're exactly behind it.

GalaxyX (author)(seabear)2009-10-06

yeah but he is just trying ot explain that this isnt even gonna be close to as acurate as a red dot sight because it ISNT a red dot sight its an aperture sight

dude this is made to be a cheap solution for those w/out a scope give him a break id like to see you make a perfectly accurate scope for like $2. really.

mikmkt93 (author)2010-05-20

this is nice, but its an aperture sight or acog...not red dot...just sayin

infinityLAO (author)mikmkt932011-03-23

you play too much cod or something. his title is correct. notice it says red dot SCOPE

pandaboy292 (author)2008-03-15

how hard does your gun shoot?

Jplaz (author)pandaboy2922008-03-19

230 FPS with .20 gram BBs 290 with .12 gram BBs. It's a great gun,only 20 bucks comes with two mags and a silencer, but i recommend using .20 because .12s curve up way too much.

swimmer95 (author)Jplaz2010-04-29

just saying 230 is horrible and so is 290

pokerstud001 (author)swimmer952010-10-15

Doesn't go that much further up than that. If 290 is horrible, you can't call 320-350 fantastic, can you?

infinityLAO (author)pokerstud0012011-03-23

No but you can call 450 fantastic, no offense but ya 290 sucks. Like i would not be able to use it for anything but a boomerang because i doubt you can feel the bullets when you get hit. my first gun was a crappy mini uzi that you can not feel 3 feet away shooting you right in the chest

firebird11692 (author)Jplaz2008-09-26

I take it that's not the gas version....for 40 you can get the gas version of it and it comes with a silencer...i have it and it's pretty sweet

pandaboy292 (author)Jplaz2008-03-19

online or store?

Jplaz (author)pandaboy2922008-03-20

online at, and i buy my BBs at dicks sporting goods.

robertjames (author)2010-12-11

will this work with a nerf gun

kve23 (author)robertjames2011-02-05

I don't see why it wouldn't.

poellmac (author)2010-10-03

cool scope!!

superhornt (author)2010-04-23

i have a gun with no sights, just a scope rail. i was in idiot, and didn't get a scope, so i aim off the rail, or attatch a tube. should i do this to the tube i have as a "makeshift scope"? or should i just aim with the scope rail?

superhornt (author)superhornt2010-04-24

technically, this is a sight. i added a red dot to my gun, its only a little better ( i  still want a real one, homemade ones don't work very well)

snook123 (author)2010-02-21

use a rubber band

Tannersdumb (author)2009-10-15

Good for an airsoft gun but i wouldnt go near my .45 with it

imshanedulong (author)2009-09-17

Not bad, but for more realism, make it light up. a white LED under it would work!

hammy10809 (author)2009-07-02

if you tape the slide to the rest of the gun on a gas blow back of a 9mm or something it probley wont affect it at all, good instructable though

thing 2 (author)2009-06-12

cool instructable!

MegaMaker (author)2009-05-28

Will it break when it gets hit?

chinnerz (author)2009-02-07

Not a very good tape job, but that's my fault.

y not fix it?

fldhkygoalie (author)2008-02-24

thats clever. its a good thing to use as a cheap airsoft aim-er. would you mind if i added this to my airsoft/MOH Heros 2 team site?

whitewolf airsoft? would you be getting that from redwolfairsoft?

no.actually the name dates back to WWII training. my grandpa and his group were doning a field training thing(much like airsoft and paintball but lower tech) and they had to come up wih a team name. being from wisconsin my grnadpa chose white for all the snow that was there. and one of the younger ones went to a highschool where their mascot was a wolf. so they smacked um together to get whtiewolf. to keep the story alive thats what ou rairsoft team is named.

ok, thanks for the clarification. that's cool, my grandfather was only 14 in WWII. He fought in Vietnam, though.

paulm (author)Landon Sullivan2008-05-23

that would suck (fighting in vietnam)

Derin (author)paulm2008-08-20

yeah ur right(i played BF vietnam)

Landon Sullivan (author)paulm2008-05-23

Well, technically he didn't FIGHT, he was a gunner on an armed cargo plane.

Jplaz (author)fldhkygoalie2008-02-25

nope, go ahead.

Molybdenum (author)2008-08-14

so how do you get it to be on target? WHat happens if it gets shot? What if you play at night?

Jplaz (author)Molybdenum2008-08-15

Just keep fooling around with it, make another, use a laser or something.

AirsoftMaster1213 (author)2008-07-19

This is a great idea. Tried it on my airsoft gun and its dead on!!!

TheLordsServant (author)2008-05-03

Very nice job, looks good!

CameronSS (author)2008-02-23

For a really nice tight plastic end, use a heat gun-or a hairdryer if that's all you have-and heat shrink the end. Be careful, though--it's really easy to burn a hole straight through.

heavy.metal.nguyen (author)2008-02-23

I think it would aim better if you put a piece of plastic on both end and put a dot on both pieces. That way when you see only one dot you know it's right.

GorillazMiko (author)2008-02-23

There isn't actually a red dot though. Add in a laser, that would be cool, that's what I do. Nice job.

ac1D (author)GorillazMiko2008-02-23

and that what i did to my airsoft. its awesomly precise!

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