P. 4 Semiauto bb airsoft gun shooting at 280miles/h

POLAND_SPUD · Sun Dec 16, 2007 4:07 pm

ant judging from the vid it must be fun to shoot.
I am really impressed, it's semiauto 8)
it looks a bit ghetto but that can be improved.....

ant never ever say that your gun is the best.... some of as are a bit megalomaniac

shud_b_rite · Sun Dec 16, 2007 4:16 pm

Your very good at making these kinds of guns. I wish i had the tools and materials to make these also. I see potential here for a high pressure semi auto. Simply awesome.

nivekatoz · Sun Dec 16, 2007 4:18 pm

THAT THING IS COOL!!!!!!!!!I would like to know how you built it ,if you don't mind....I would make one my self....what did you use for the barrel??? The only thing I would change would be the soda bottle..I would use a small CO2 tank...or somthing??? :salute:

VH_man · Sun Dec 16, 2007 4:37 pm

you know, this actually doesnt look too too hard to build.......

dont mind if i give it a go do ya? ive got the parts.......

Antonio · Sun Dec 16, 2007 6:42 pm

This airgun is easy to make. You dont need special tools etc. I will post detailed plans when I have days off in the holidays. For the barrel I used aluminium pipe that they sell in the shop. I was lucky enough not to do any milling on it as it was the correct size when I bought it:)

schmanman · Sun Dec 16, 2007 7:20 pm

nice work!

It would be interesting to see the internals.

welcome to spudfiles!

SleekZ · Mon Dec 17, 2007 6:55 am

yeah man chuck up some plans on here- gun looks good by the way!

ALIHISGREAT · Mon Dec 17, 2007 4:10 pm

ant wrote:This airgun is easy to make. You dont need special tools etc. I will post detailed plans when I have days off in the holidays. For the barrel I used aluminium pipe that they sell in the shop. I was lucky enough not to do any milling on it as it was the correct size when I bought it:)

can't wait to see how this thing works

and i have some spare 8mm aluminium pipe (with a 6mm id) so i might have to make something similar

Antonio · Fri Dec 21, 2007 6:10 pm

ALIHISGREAT wrote:
ant wrote:This airgun is easy to make. You dont need special tools etc. I will post detailed plans when I have days off in the holidays. For the barrel I used aluminium pipe that they sell in the shop. I was lucky enough not to do any milling on it as it was the correct size when I bought it:)
can't wait to see how this thing works and i have some spare 8mm aluminium pipe (with a 6mm id) so i might have to make something similar

Make sure u find 3 tubes that fit into each other with the smallest tube having an internal diameter of ur projectile.

Maniac · Fri Dec 21, 2007 6:59 pm

get them plans ant everyone wants to know how it works

Sat Dec 22, 2007 1:33 pm

By your name I'm assuming you are Belgian..??

Your system is similar to the one used in the Girandoni airgun.
It's actually a simple system.A hammer valve or poppet valve in a sense.
Hard to operate at high pressures and not great for flow, but very effective in giving off short burtst of air.
A good way of getting a lot of shots out of one fill
I like the creativety, but not the look.
I have used the stack method before, make all the layers the same or it looks like crap.

Anyway, very promising!!
Welcome to the forum!!

octane89 · Sat Dec 22, 2007 2:25 pm

Plans of this would be very cool. I want to make a bbmg that is very effiecent off a tank, and not have to dunp rounds of and constantly be powered by a compressor.

Antonio · Sat Dec 22, 2007 4:35 pm

Brian the brain wrote:By your name I'm assuming you are Belgian..??

Your system is similar to the one used in the Girandoni airgun.
It's actually a simple system.A hammer valve or poppet valve in a sense.
Hard to operate at high pressures and not great for flow, but very effective in giving off short burtst of air.
A good way of getting a lot of shots out of one fill
I like the creativety, but not the look.
I have used the stack method before, make all the layers the same or it looks like crap.

Anyway, very promising!!
Welcome to the forum!!

Hey, I come from Heaven

. Yeah the airgun may be very simple but I never saw someone make something like it before. My poppet valve using a screw is very good, I made it up myself using basic materials and tools. You say that it is hard to operate at high pressures and doesnt have great flow, This is NOT the case with my prototype. I had this bb gun fight today with some friends of mine, and this gun is really powerfull. I tried shooting with 0.25g balls today>awesome!
The airguns external design is not my main issue. As I believe that is not that makes it a good airgun. It is also the case the law in my country says that no airgun may look anything like a real gun. So that is why I am not that worked up about it''. All these cloud and bbmgs on these forums may all look really fancy and all but they perform less. For me its all about function and reproducibiluty.

jean · Sat Dec 22, 2007 5:10 pm

mh i buy few years ago a cp88 from the nederlands this thing is green
say me that the law in nederlands say airguns no looh at real guns

its a hammer valve and the barrel is the hammer... right?
very good design i think

tot ziens

jean · Sun Dec 30, 2007 8:21 pm

sorry for double post

ant can you tell me where you by the 6mm barrel?
i by a 6mm id aluminium tube but the airsoft bb´s don´t fit. the barrel is to small.
i buy in homedepot and the manufacturers call "alfer" http://www.alfer.com

please tell me the name of homedepot you buy the barrel holland is neighboring country so i can buy it.

thx jean