Introduction: Under Barrel Grenade Launcher for the MAR

This is an Instructable for an under-barrel grenade launcher for my MAR. It launches grenades which throw fragments around the area of impact upon impact.

Note: The grenade launcher has a block trigger but since this is more of a secondary, special, or back-up weapon I guess it doesn't matter as much.


More Instructables by me.

Step 1: Making the Components

Make the following:

Picture 1: Make 2 (Lets for now call these part A).
Picture 2: Make 1 (Lets call this part B).
Picture 3: Make 1 (Lets call this part C).
Picture 4: Make 1.
Picture 5: Make 1.

Step 2: Construction

Follow the images:

Picture 1-2: Add "Y" clips where shown (there should be 8 of them).
Picture 3-4: Add the earlier made parts where shown.
Picture 5: Place white rods where shown.
Picture 6: Add the earlier made ram rod and add rubber band(s).

Step 3: Ammo

These are different types of ammo which can be used. These can be hard to make. I suggest first putting the spacers on the rod and putting the "Y" clips at the ends and using you fingernails or something thin to push the rod so both "Y" clips hold on. Then add the gray or metallic blue connector.

Step 4: Placing, Loading, and Firing

Lock the white rods so they connect into the grip as shown in image 1. Place the rubber band like in the 2nd image. Pull the ram rod back as in image 3 until the trigger blocks the rod from pushing the ammo out and place the ammo in the barrel. Push the trigger to the side to fire (Its a block trigger).



Warning- This may cause harm or injury if misused. Do not point it at people. I am not responsible for damage, injury, or death caused by this instructable.

Comments

author
aleceatsfood (author)2010-12-15

NICE!

author
Masterdude (author)aleceatsfood2010-12-16

Thanks.

author
aleceatsfood (author)2011-02-20

here it is, its on a crossbow and the 3rd pic is of shotgun ammo the 4th pic os of grenade ammo! thanks it cool. I have to add more to the cross bow to make it stay stedy but here...

NO 001.JPGNO 002.JPGNO 003.JPGNO 004.JPGNO 005.JPG
author
Masterdude (author)aleceatsfood2011-02-21

Nice

author
aleceatsfood (author)Masterdude2011-02-21

thanks!

author
Fred the evil puppet (author)2010-07-26

why did i make this and it never worked?

author

What do you mean that "it" never worked? Did the grenade not shoot out? Did it not fragmentate? Did the trigger not want to move? Or something else? The design is so simple it should almost never fail totally.

author

it was the gun itself. sorry, i meant to say the gun. it just never fired. i know i built it 100% correct.

author

Why didn't it fire? Did you use rubberbands or did it just jam constantly?

author

it jammed

author

Maybe the ram rod when the trigger is pushed aside hit the white connector? In this case you just push it up until it goes through the hole in the white connector.

author

ah. thanks. now it shoots!

author

You're welcome.

author
Fred the evil puppet (author)2010-07-28

it jammed.

author
GAG3 (author)2010-04-15

MAR BAR!

author
Masterdude (author)GAG32010-04-15

What?

author
GAG3 (author)Masterdude2010-04-15

M bar?

author
Masterdude (author)GAG32010-04-16

Ummm....
Are you just referring to my guns or are you trying to make a joke? If it is supposed to be a joke, how about explaining it or using more words so it can be understood?

author
GAG3 (author)Masterdude2010-04-16

Referring to YOUR guns

author
Masterdude (author)GAG32010-04-17

Okay.

author
GAG3 (author)Masterdude2010-04-17

I built it...IT'S AWESOME...Thank's dude.:)

author
Masterdude (author)GAG32010-04-19

Hey, I'm going to post a new gun soon. It's the MHMG. It has a hi-cap mag, bi-pod, and can have straps as shown. Here's a preview of it:

IMG_0916.JPGIMG_0914.JPG
author
Mr. Muggle (author)2009-12-09

I was the first one to build a MAR: www.instructables.com/id/The-MAR-Tank/

author
DJ Radio (author)2009-12-07

These kinds of "Grenade launchers" are just another excuse to post lame block triggers.  

author
Masterdude (author)DJ Radio2009-12-08

I do admit that block triggers aren't really good and that true triggers are a lot better but to make a working grenade launcher small enough to fit under the barrel and look more-less realistic I had to use a block trigger.

author
magnierk (author)DJ Radio2009-12-08

 you're lame

author
DJ Radio (author)magnierk2009-12-08

Who cares?  I'm still right.

author
~KGB~ (author)2009-12-08

cool ammo!

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Bio: I make K'nex guns, specializing in semi-automatic, RBG-Slingshot hybrid systems which i use in most of my guns. Note: I am not responsible in ... More »
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