Laws are kinda funny and often make no sense to me.
For instance, you can buy this nice Sig Rattler in 300BLK with a 30 round mag. It is perfectly legal as it is sold a pistol.
If you take your own tiny .22cal snub nose revolver and duck tape on a stock, you could go to Federal Prison as they say you have turned it to a rifle. WTF?!?
One can buy this high quality addition for your pistol from Israel:
It in no way enhances the pistol except maybe better aim. It does look great and for politicians, that is key.
It is legal to buy that (not posting if I have one).
If you put your Glock or H&K into it, you are headed to jail.
It can really jazz up you replica soft air gun and that is legal.
Help me figure this out - I am a dumb old geezer!