Opening Post:: "... if it was a build was it legal?"
If it were built from a .45-70 lever action rifle, it would be legal if built after filing and getting approved an ATF Form 1 and paying $200 to tax and register as a Title II 1934 National Firearms Act short barrel rifle; if it were an NFA SBR, sale and transfer of registration would be a Form 4 and another $200 tax.
If built from a virgin receiver as a pistol, it would be a Title I 1968 Gun Control Act handgun subject to ordinary handgun laws.
(Some state laws might apply; some Southern states only recognize pistols as having barrel length less than 12 inches that was an exemption of single shot trapper's pistols from the concealable handgun state statutes which got carried over into concealed carry permit law. I was told I could not open or concealed carry an AR pistol with 12 inch or longer barrel on my handgun carry permit, shorter than 12" OK..)[/QUOTE
Opening Post:: "... if it was a build was it legal?"
If it were built from a .45-70 lever action rifle, it would be legal if built after filing and getting approved an ATF Form 1 and paying $200 to tax and register as a Title II 1934 National Firearms Act short barrel rifle; if it were an NFA SBR, sale and transfer of registration would be a Form 4 and another $200 tax.
If built from a virgin receiver as a pistol, it would be a Title I 1968 Gun Control Act handgun subject to ordinary handgun laws.
(Some state laws might apply; some Southern states only recognize pistols as having barrel length less than 12 inches that was an exemption of single shot trapper's pistols from the concealable handgun state statutes which got carried over into concealed carry permit law. I was told I could not open or concealed carry an AR pistol with 12 inch or longer barrel on my handgun carry permit, shorter than 12" OK..)
So it might have been considered just a pistol? But not likely?