well that would be if there was a exact spec for all ar pistol tubes
but if your building one yourself im sure you can buy whatever tube you want
as it needs the tube to operate
the bushmaster pistol has a very short tube
so does that mean any other ar pistol that is longer is now a redesign
or is the bushmaster a redesign since it uses a shorter bolt carrier group to make it fit in such a short tube
even searching online for pistol tubes, if you can find lengths posted they all vary anyways
one pistol tube I have that is longer has a sling swivel mount on the very back end, where you would shoulder it
so kind of defeats shouldering it if the sling swivel is in the way
but if your building one yourself im sure you can buy whatever tube you want
as it needs the tube to operate
the bushmaster pistol has a very short tube
so does that mean any other ar pistol that is longer is now a redesign
or is the bushmaster a redesign since it uses a shorter bolt carrier group to make it fit in such a short tube
even searching online for pistol tubes, if you can find lengths posted they all vary anyways
one pistol tube I have that is longer has a sling swivel mount on the very back end, where you would shoulder it
so kind of defeats shouldering it if the sling swivel is in the way



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