BUREAU OF ALCOHOL, TOBACCO, AND FIREARMS (BATF)
Correspondence from and to a user.
Proof of ATF recognition of Propellant Actuated Device exemption
It is important to note in this particular letter they referred to
Class B (1.3C UN-0186) rocket motors as model rocket motors. In
their mind they consider model rocket motors to include what NAR
calls "Model Rocket Motors" and "High Power Rocket Motors", and
what USR calls MR, HPR, and Industrial Rocket Motors. In short
EVERYTHING offered by USR.
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