AR-15 Bullpup Lower?

Before you waste your youth on this, do you understand material properties such as tensile strength, modulus of plasticity, etc? Do you know what the different tolerance classes are and how they apply? Do you know what tolerance stacking is? Do you know what geometric tolerances are?

I don't want to crush dreams, but if you don't know these basic things, nothing you design will be worth the paper you draw it on.
 
Armedsask said:
Before you waste your youth on this, do you understand material properties such as tensile strength, modulus of plasticity, etc? Do you know what the different tolerance classes are and how they apply? Do you know what tolerance stacking is? Do you know what geometric tolerances are?

I don't want to crush dreams, but if you don't know these basic things, nothing you design will be worth the paper you draw it on.
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Not really, that's why I'd like to work with others that DO know about those things and can use them, even just to bounce ideas off of.
 
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Armedsask said:
The Canadian firearms industry is a small, close knit group full of vultures, thieves, and a cannibalistic mindset. Good luck.
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I am sorry to say, but this appears to be the sentiment that is being echoed in this thread by those in the know… Someone who is willing to help you is probably just as willing to steal all your designs as their own… That is to say you have actually come up with something, how do I put it politely, worthwhile… As I assume you are not the first, and presumably not the most experienced, person to attempt something like this…
 
Mirk said:
I assume you are not the first, and presumably not the most experienced, person to attempt something like this…
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I usually say this to most of the guys with these pipe dream threads; better qualified people than you have looked into these ideas and abandoned them. What does that tell you?
 
I should clarify that I am not here to discourage you from trying, learning, or experimenting. However, you should understand you'll likely never get anything made. Keep designing though. Keep learning. Grow your skills. One day you might be as awesome as me.

Hell, I have CAD drawings I made back when I was in highschool, of action concepts that are essentially the same as the ACR. I should really dig them up, it's uncanny how close they are. Of course I didn't know what extrusions were back then, so my receivers were bent metal forms.
 
Armedsask said:
Before you waste your youth on this, do you understand material properties such as tensile strength, modulus of plasticity, etc? Do you know what the different tolerance classes are and how they apply? Do you know what tolerance stacking is? Do you know what geometric tolerances are?

I don't want to crush dreams, but if you don't know these basic things, nothing you design will be worth the paper you draw it on.
Click to expand...

I don't know any of that stuff and I dare you to tell me my cans are no good ........
 
Why not make a simple lower like the AR180b execpt out of aluminum but compatible with an AR15 upper.
Register it for classification as a non resrtricted semi auto hunting rifle lower.
Cross fingers and hope for the best? lol
 
Travis Bickle said:
Why not make a simple lower like the AR180b execpt out of aluminum but compatible with an AR15 upper.
Register it for classification as a non resrtricted semi auto hunting rifle lower.
Cross fingers and hope for the best? lol
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somebody have already tried that, anything that is direct bolt on to a AR upper, is deem a variant and will be classified as such.
 
hbean said:
somebody have already tried that, anything that is direct bolt on to a AR upper, is deem a variant and will be classified as such.
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Direct bolt on… perhaps… the way I heard it was if the upper and lower could be duct tapped together and fired, albeit unsafely, it's a variant… :rolleyes:
 
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