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KISS BB pistol

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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KISS BB pistol

Unread postAuthor: farcticox1 » Tue Apr 09, 2019 5:44 pm

A few parts lined up for a simple 4.5mm BB pistol, 1/4" QEV, 1/8" 3/2 lever valve for trigger. Interchangeable barrels :idea: Single shot muzzle load with a magnet to hold the BB :idea:

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Re: KISS BB pistol

Unread postAuthor: jackssmirkingrevenge » Wed Apr 10, 2019 7:20 am

Looks good, though I would say the chamber is far too big, most of that air is going to be wasted. You should really try for higher pressures in a much smaller chamber, especially with the small caliber and all-metal construction.
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Wed Apr 10, 2019 6:52 pm

Ha Ha yes, I am fabricating a square chamber which will be hidden by the side plates, still has at least 4x the 8" barrel volume :D

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Re: KISS BB pistol

Unread postAuthor: hectmarr » Wed Apr 10, 2019 7:29 pm

It looks compact and neat. I like short weapons, you can carry them at the waist. :shock:
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Re: KISS BB pistol

Unread postAuthor: jackssmirkingrevenge » Thu Apr 11, 2019 6:46 am

farcticox1 wrote:square chamber


Not normally recommended as a pressure vessel... though I imagine the wall thickness is completely disproportional to the pressure you will be using.
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Thu Apr 11, 2019 5:46 pm

The tubing and end caps are 1/8" stainless, won't see much more than 150psi.

So this is the heart of the beast with the 5" barrel, pretty simple (KISS) just needs an air supply.

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Re: KISS BB pistol

Unread postAuthor: ashokacao » Mon Jun 10, 2019 10:08 pm

Youtube???
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Re: KISS BB pistol

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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Tue Jun 11, 2019 5:19 pm

No grip made yet, coming soon :D
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Sun Jun 16, 2019 4:29 pm

First fitting of the grip, and a dry fire :shock:
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Re: KISS BB pistol

Unread postAuthor: jackssmirkingrevenge » Mon Jun 17, 2019 5:19 am

Looking good!
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Re: KISS BB pistol

Unread postAuthor: Moonbogg » Mon Jun 17, 2019 11:18 pm

That's an impressive looking project! I like the box-shaped air chamber. That's really thinking outside the cylinder. Looking forward to a fully functional demonstration.
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Tue Jun 18, 2019 3:17 pm

Original plan was to use only threaded fittings for the chamber just to see what I could make by screwing parts together :idea: I know not everybody will have access to welding equipment, all I have is a drill press and the Tig welder is where I work in the maintenance shop, but when I realized I could get a decent size chamber hidden between the side plates if I made it out off 1" square I couldn't resist. :lol:
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Wed Jun 26, 2019 5:59 pm

All together with sights, 2 rear posts will go up and down, front post will go up and down and swing side to side for adjustment KISS. Grip is coated with lacquer but is still a bit sticky so I got my finger prints on it :shock: Block on the muzzle is an idea I had for an easy muzzle loader, barrel goes half way in and is secured with a set screw underneath, front exit hole is 5mm as is the top loading hole, tilt pistol back slightly and drop in BB 8)

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Re: KISS BB pistol

Unread postAuthor: jackssmirkingrevenge » Sat Jun 29, 2019 6:57 am

Nice, I like the brake/loader idea!
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Re: KISS BB pistol

Unread postAuthor: farcticox1 » Sun Jun 30, 2019 2:27 pm

Some testing shows how wildly inaccurate a smooth bore BB pistol is, I will convert it to a .177 pellet and try again, maybe a sliding barrel breach load again :idea:
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