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Bullpup Sniper Design

1502 Views 12 Replies 4 Participants Last post by  airsoftbuild, 
airsoftbuild
Here's my little project I've been designing for about a year now. CAD design is near complete so machining will start very soon. Everything except the scope has been designed one off. 509mm inner barrel length in a 30" overall length. Custom hop up design using vsr buckings and barrels. Open to thoughts and criticism!!
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Font Camera accessory Engineering Auto part Cylinder

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Air gun Trigger Machine gun Gun barrel Gun accessory

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R
Very nice reminds me of a VKS, have you considered an internal HPA tank storage?
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SiliconeSword
That's pretty awesome, is it mechanically or electronically actuated?
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airsoftbuild
RonSwanson said:
Very nice reminds me of a VKS, have you considered an internal HPA tank storage?
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I took ideas from that, some 50bmg rifles, and SKAT. I was originally going to make the stock solid and house a CO2 rig but I turned away from it because of design and looks. I have also figured out if I want to do something internal I have room inside the suppressor to build something.
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airsoftbuild
SiliconeSword said:
That's pretty awesome, is it mechanically or electronically actuated?
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Thank you! Its all mechanical using a simple knocker and pin seal.
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Sodium
I'm confused by the hopup-cylinder head interface. In the VSR system, the nozzle is supposed to go in the bucking, but this appears to be sealing against the outside. Am I looking incorrectly?
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airsoftbuild
Sodium said:
I'm confused by the hopup-cylinder head interface. In the VSR system, the nozzle is supposed to go in the bucking, but this appears to be sealing against the outside. Am I looking incorrectly?
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Yeah so I know it's confusing to look at because the bolt and knocker surround the hop-up unit but here it is by itself. When the bolt is pulled all the way back it hits the cycle nozzle(brown) and allows a feed. The bolt will catch back forward just past where the cycle nozzle meets up with the bucking. I wanted to make the most solid setup possible and I figured a moving nozzle wouldn't be ideal when firing. This way nothing moves when firing. The red rod is a detent so the nub cannot spin. Metal U channel nub. 2 piece hop-up chamber(teal/purple). Air from the valve in the back comes up through the tube(purple) when the knocker hits the valve.
Gas Cylinder Font Pipe Machine

Cylinder Gas Magenta Pipe Font
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Sodium
As I thought. Your nozzle doesn't go into the bucking the way a normal vsr nozzle goes into a vsr bucking. Instead you made a hopsystem who's nozzle-bucking interface is more akin to an aeg system. I think this will result in the the bb being placed too far back resulting in major inconsistency.
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airsoftbuild
Sodium said:
As I thought. Your nozzle doesn't go into the bucking the way a normal vsr nozzle goes into a vsr bucking. Instead you made a copsystem who's nozzle-bucking interface is more akin to an aeg system. I think this will result in the the bb being placed too far back resulting in major inconsistency.
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Hmmmm you're right. I've been out of the game too long and forgot about that. Good catch I'll have to extend the nozzle some into the bucking.
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Sodium
Any reason in particular you're making your own scope rings rather than buying a set? Function? Or just aesthetics?
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airsoftbuild
Sodium said:
Any reason in particular you're making your own scope rings rather than buying a set? Function? Or just aesthetics?
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I'm making everything on the rifle so I figured why stop at the scope rings. I'd make the scope too if I did more research on how they're made 😅
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SiliconeSword
Definitely can't make a good scope, you'd need custom made lenses and a way to get a gas tight print, and you'd need to fill it with nitrogen somehow
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airsoftbuild
SiliconeSword said:
Definitely can't make a good scope, you'd need custom made lenses and a way to get a gas tight print, and you'd need to fill it with nitrogen somehow
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Exactly why that's where I'm stopping at what I'm making
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