I have a hard time making sense of your post.
The only way something can be classified a handgun but not a pistol is if it is a revolver.
Once a weapon is classified as a SBR you can take the stock on and off at will.
I never heard of the accronym of a vfg.
I am confused by the way you phrased the rest of your question so I'm not sure what you are asking.
You might get more responses if you rewrite your question using capital letters and punctuation where appropriate. Folks would be able to understand it better.
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