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MP5 BBMG, Non Threaded Magazine (with video!)

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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MP5 BBMG, Non Threaded Magazine (with video!)

Unread postAuthor: littlebro05 » Sun Sep 21, 2008 6:20 pm

Hey guys,

After my holidays i've finally finished building a proper BBMG. As you can see I took a toy MP5 Navy and shoved the internals in. The magazine is non threaded, and is fitted into a 1" PVC Coupling. It's air tight and can fire not very well, because i've learnt my lessons on clouds running on 80psi 600mL coke bottle. Adding video once I've built a larger air tank.

-Specs-
Assumptions made with range using with prototype, the airflow from the schrader valve is quite fast. Will fire with 2L soon.
- Minimal Range 12m (lowest on pressure 20psi)
- Effective Range 15- 18m
- Max Range 25m (highest pressure 90psi)
- Added hop-up (Kash munni's Idea)
- Magazine is made from pressure rated air hose about 3/4"
- Barrel is made of two bic pen tubes
- operates on 90psi 2.25L.
- Muzzle Velocity = 300FPS0.10g 6mm beads
- Average Velocity = 200FPS
- Max Range Velocity = 150FPS

Anyway here are some pictures.

Image
With Stock

The gun without the stock, the toy MP5 I bought in Australia you could remove the stock which is a bonus for me. The ruler is 16cm.

Video of the gun's features, materials and firing:
http://www.youtube.com/watch?v=7_ieU1csMBA
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Last edited by littlebro05 on Fri Oct 03, 2008 1:37 am, edited 6 times in total.
It's Nerf or Nothing.

Don't start crying when I play this as my hobby, Paintball, Airsoft and Nerf are equally good hobbies, except you can play Nerf in public. Good day! Hmph!
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Unread postAuthor: Davidvaini » Sun Sep 21, 2008 7:07 pm

looks good, I would put up a thumbnail so people will actually look at this.

Can you explain the firing mech? Is it my vortex cap design or is it a sideways cloud? or something else?
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Unread postAuthor: littlebro05 » Sun Sep 21, 2008 7:59 pm

Here are some more pictures to explain.

Image
The internals of the gun pretty self-explanatory, The white tubing sticking out is where i've placed my hop-up.

Image
That's where the beads go inside, colourful isn't it? :shock:

Image
Thats the mechanism, the white tube is the barrel and the metal tubing is where the air comes in. The airflow is quite good considering i'm using the schrader as an output valve.
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It's Nerf or Nothing.

Don't start crying when I play this as my hobby, Paintball, Airsoft and Nerf are equally good hobbies, except you can play Nerf in public. Good day! Hmph!
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littlebro05
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Unread postAuthor: Lentamentalisk » Sun Sep 21, 2008 8:40 pm

yoza! its hard to believe that any feed at all. None of the air you are running through it "popcorns" the ammo at all. I would really suggest that you find a way to hook the air inlet up to the bottom of clip, otherwise you will be wasting a lot of air, due to bad feeding.
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Do not be troubled about the future, for it has not yet come;
Live life in the present, and make it so beautiful that it will be worth remembering.
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Unread postAuthor: littlebro05 » Sun Sep 21, 2008 8:42 pm

Lentamentalisk wrote:yoza! its hard to believe that any feed at all. None of the air you are running through it "popcorns" the ammo at all. I would really suggest that you find a way to hook the air inlet up to the bottom of clip, otherwise you will be wasting a lot of air, due to bad feeding.


lol I have no idea how but we'll soon find out if it fires good or not, but at this point, the feeding of the ammo through the barrel performance is the same as my bbmg prototype.
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It's Nerf or Nothing.

Don't start crying when I play this as my hobby, Paintball, Airsoft and Nerf are equally good hobbies, except you can play Nerf in public. Good day! Hmph!
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littlebro05
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Re: MP5 BBMG, Non Threaded Magazine (with video!)

Unread postAuthor: littlebro05 » Fri Oct 03, 2008 1:36 am

Edit: Oops double post, pressed quote button instead of edit :S :(
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It's Nerf or Nothing.

Don't start crying when I play this as my hobby, Paintball, Airsoft and Nerf are equally good hobbies, except you can play Nerf in public. Good day! Hmph!
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littlebro05
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Unread postAuthor: lr-lars-nl » Sat Oct 04, 2008 4:54 am

wow just wow, that's a nice gun you got there :D
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