A while back I threw together a BBmg around a HPA system. Unfortunately aesthetics were quite lacking and after some use the swivel joint on the remote snapped rendering it unsafe. I decided to completely scrap the old shell and start over.
I came up with this BBmg. It has most of the same parts as the old one but, it is a much cleaner design. This design is coaxial which allows it to be quite compact.(Not sure if this has been done before.) It is only 18 inches long. It employs an adjustable hop-up system. To counteract the leakage I have encountered from blowguns under high pressure I bought a push button valve from McMasters. The magazine cap is held on by a locking mechanism. The body is formed from melted PVC pipe and the serrated muzzle guard was made with my dremal.
I am unable to give an exact muzzle velocity but, I did try the can penetration test.http://www.redwolfairsoft.com/redwolf/a ... ulletID=34 Judging from the fact that it penetrated the top and the continued on to penetrate the side I estimate a 650 Fps .2 BB at 700 PSI.
I-15 HPA
- Attachments
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- The pierce top of can.
- bbmg hhpa 007.jpg (31.72 KiB) Viewed 4467 times
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- A rather blurry picture, I tried to show the regulator adjustment.
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- The entire body.
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- The regulator used.
Last edited by irisher on Wed Jul 07, 2010 1:29 pm, edited 3 times in total.
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deathbyDWV
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Wow now there's some power! Looks very good. I'm guessing it's a vortex? I'm pretty sure that your design has been done. If I make another I'm gonna make it with this design.
Life's too short to mark off the items on your wish list...
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jackssmirkingrevenge
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Not bad for performance and much cleaner than your previous monstrosity 
shame you're using plastic BBs
btw deathbyDWV, our signatures appear to have come from the same source
shame you're using plastic BBsbtw deathbyDWV, our signatures appear to have come from the same source
hectmarr wrote:You have to make many weapons, because this field is long and short life
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clemsonguy1125
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The gun kinda reminds me or davidgvainis bullpup
Last edited by clemsonguy1125 on Wed Feb 17, 2010 9:25 pm, edited 1 time in total.
I agree, visually they look strikingly similar. Anyway, very nice work. I think your gun would benefit from a handle though. But as stated above, nice power for plastic bbs, but it would be just wicked with metal bbs!The gun finda reminds me or davidgvainis bullpup
"You can't be friends with anyone if you aren't friends with yourself."
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
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Current Project: None, I'm in Spudremission.
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
Defeat is always momentary.
–Carl Denham
Current Project: None, I'm in Spudremission.
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Davidvaini
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Yes, it has been done before... here is the first example shown online:irisher wrote:AThis design is coaxial which allows it to be quite compact.(Not sure if this has been done before.)
http://www.spudfiles.com/forums/davidva ... 14559.html
Yes, my bull-pup coaxial BBMG looks very much like this one.. though it looks like he spent more time with it.clemsonguy1125 wrote:The gun kinda reminds me or davidgvainis bullpup
anyway, good job mate!
UPDATE: I got bored and put a foregrip and a red dot scope on the BBmg. [img][img]http://i40.tinypic.com/hukdci.jpg[/img][/img]
The sight was surprisingly accurate. It was so good my friends have now banned it from use unless it is 7 vs 1.
8)
The sight was surprisingly accurate. It was so good my friends have now banned it from use unless it is 7 vs 1.
8)
Last edited by irisher on Mon Mar 15, 2010 4:13 pm, edited 1 time in total.
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deathbyDWV
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The grip looks good. The sight is cool too. 7on1!
Life's too short to mark off the items on your wish list...
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Davidvaini
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thats not an ACOG.. looks like an standard red dot sight...irisher wrote:UPDATE: I got bored and put a foregrip and an Acog on the BBmg. [img][img]http://i40.tinypic.com/hukdci.jpg[/img][/img]
The sight was surprisingly accurate. It was so good my friends have now banned it from use unless it is 7 vs 1.
8)
still looks good though...
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jackssmirkingrevenge
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hectmarr wrote:You have to make many weapons, because this field is long and short life