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Pipe size for airsoft

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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Pipe size for airsoft

Unread postAuthor: crazyfreak0075 » Sat Sep 30, 2006 4:37 pm

I was thinking about building an bbmg and was wondering what size pipe you guys use for the barrel. Oh yeah i wanna shoot 6mm airsoft bb's. Thanks!
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Unread postAuthor: MrCrowley » Sat Sep 30, 2006 4:54 pm

use 6mm copper pipe, or 1/4" CPVC but im not sure about the CPVC i havnt tried it before
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Unread postAuthor: crazyfreak0075 » Sat Sep 30, 2006 4:58 pm

Im from the U.S. and I don't think they sell 6mm coper pipe in U.S. Is there any other sizes for copper that a airsoft bb will fit. But thanks for the info. :D
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Unread postAuthor: noname » Sat Sep 30, 2006 4:59 pm

I can get all sizes of tubing at my hardware store, try there.
Also, if you want to make a vortex BBMG I can make the vortex for you.
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Unread postAuthor: crazyfreak0075 » Sat Sep 30, 2006 5:08 pm

Hey ill check that out.
And about the vortex Thanks but no thanks. If i do ill probly try to make it myself. Im thinking i might make a bolt action now not a bbmg.
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Unread postAuthor: MrCrowley » Sat Sep 30, 2006 10:19 pm

and for the copper pipe try 1/4" copper which is roughly 6.25mm
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Unread postAuthor: shadowghost21 » Mon Oct 16, 2006 5:59 pm

Or use 9/16" aluminum. It is not as strong as copper but I use it for all my air soft projects! Find it at ace hardware. Comes I think 3foot sections for about 1.50$
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Unread postAuthor: ammosmoke » Mon Oct 16, 2006 6:04 pm

Use 1/8 copper, not 1/4, 1/4 is too big.
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Unread postAuthor: MrCrowley » Mon Oct 16, 2006 11:12 pm

but isnt that 4mm?bbs are 6mm.anyway 1/4"copper would have a .25mm gap.
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Unread postAuthor: tntlly » Tue Oct 17, 2006 12:03 am

MrCrowley wrote:use 6mm copper pipe, or 1/4" CPVC but im not sure about the CPVC i havnt tried it before


i have 1/4 inch cpvc in my hand and an airsoft bb, the cpvc is way too big
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Unread postAuthor: MrCrowley » Tue Oct 17, 2006 12:25 am

copper pipe is different.1/2" copper pipe is 12mm,while cpvc 1/2" is 14mm in NZ.
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Unread postAuthor: tntlly » Tue Oct 17, 2006 12:29 am

yeah... well he should go with copper anyways, when you get down to the small pvc/cpvc it starts to bend a lot, causing inaccuracy.
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Unread postAuthor: PVC Arsenal 17 » Thu Oct 19, 2006 4:47 pm

Dude.... 1/4 brakeline from autozone... like $3 for 4 feet.
Pressure rated to 1000+ psi

or 6mm brass tube
or styrene tube
both can be found at most r/c hobby shops
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