Combustion M-4

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
User avatar
freder
Private 2
Private 2
Posts: 36
Joined: Mon Sep 17, 2007 12:50 pm
Location: GERMANY

Tue Jun 17, 2008 10:54 am

This is my newest gun & I love it :D

I build it after the inspiring example M4.

I rifled the barrel and marbels fit perfectly in it.

I used the same chamber as in my other cannon
http://www.spudfiles.com/forums/rear-lo ... 14918.html

Built the gun with old stuff that was laying around added a nice camo pattern
and that was almost it.

But I kinda scrued it with the hotglue but I didn´t know any other way to put
it all together and leaving any really ugly gaps.

I still have to mount my laserpointer and my home made M203 launcher on it. ( haven´t finished it jet :oops: )

Destruction pics are also going to come. As soon as I have a few nice ones. :twisted:
Attachments
m16 stlye handle on gun
m16 stlye handle on gun
M16 style handle
M16 style handle
from an old softair gun
from an old softair gun
17062008(004).jpg
the chamber
the chamber
after painting it :D
after painting it :D
the ammo comes in here.
the ammo comes in here.
After first coat of paint.
After first coat of paint.
User avatar
Davidvaini
Sergeant 4
Sergeant 4
Posts: 1315
Joined: Tue May 29, 2007 8:58 pm

Tue Jun 17, 2008 10:59 am

nice job on doing something new.

Idk if its the camera flash or not but the camo looks glossy. I hate glossy camo guns they remind me of super soakers. So if it is actually glossy I would suggest re-doing the camo with krylon ultraflat camoflauge spray paints.

Other than that I like the overall look of the gun, get some vids up and you will have a decent showcase.
User avatar
freder
Private 2
Private 2
Posts: 36
Joined: Mon Sep 17, 2007 12:50 pm
Location: GERMANY

Tue Jun 17, 2008 11:00 am

another pic:

I´m thinking about building a probane meter on it.
This gun probably deservs it :lol:
Attachments
gun and barrel <br /><br />the barrel slides easly in and out.
gun and barrel

the barrel slides easly in and out.
User avatar
potatoflinger
Sergeant 2
Sergeant 2
Posts: 1136
Joined: Thu Nov 02, 2006 3:26 pm
Location: Maryland

Tue Jun 17, 2008 11:00 am

Very nice, I love the paint job!
It's hard to soar with eagles when you're working with turkeys.
User avatar
freder
Private 2
Private 2
Posts: 36
Joined: Mon Sep 17, 2007 12:50 pm
Location: GERMANY

Tue Jun 17, 2008 11:09 am

thanks! Yeah it glossy because the paint I bought is shit.
it dosn´t stick to the plastic :x

I´m gonna do it new as soon as I find some spare time. But first I´m gonna finish the m203 launcher. :twisted:

I only saw a M16 kinda look in the pneumatic category so I thought it would be cool havin a combustion m4/m16 gun. I think paintballs would fit in the barrel too but im not shur
User avatar
LynyrdSkynyrd
Private 4
Private 4
Posts: 93
Joined: Sat Aug 26, 2006 4:39 pm

Tue Jun 17, 2008 11:37 am

Krylon Fusion is a good paint for plastics and after its cured its pretty much impact resistant (to an extent).

Awesome cannon though. It really looks like it should be carried by Arnold Swarzenegger.

How did you go about rifling the barrel?
User avatar
freder
Private 2
Private 2
Posts: 36
Joined: Mon Sep 17, 2007 12:50 pm
Location: GERMANY

Tue Jun 17, 2008 12:02 pm

I did it like its shown here:

http://www.spudfiles.com/forums/diy-rif ... t2546.html

it worked pretty good after teh second try^^
User avatar
al-xg
Corporal 2
Corporal 2
Great Britain
Posts: 643
Joined: Fri Jan 19, 2007 12:29 pm

Tue Jun 17, 2008 12:19 pm

But I guess it doesn't have any effect on marbles ? as they are too hard to grip the rifling.

For paintball the rifled barrels have straight rifling to stop the ball from spining, but i guess thats because they aren't that rounf or homogenous.
User avatar
Spuddin
Specialist 2
Specialist 2
Posts: 262
Joined: Wed May 16, 2007 1:28 pm
Location: Oklahoma
Contact:

Donating Members

Tue Jun 17, 2008 2:41 pm

pretty slick rifle, good idea. with a small barrel like that i bet it has a loud bang.
Post Reply