Based on the verbiage in the ATF Guide, it is no wonder the local authorities just demolish the device:
§ 179.24 Destructive device determination.
The Director shall determine in accordance with 26 U.S.C. 5845(f), whether
a device is excluded from the definition of a destructive device. A person who desires to obtain a determination
under that provision of law for any device which he believes is not likely to
be used as a weapon shall submit a written request, in triplicate, for a ruling
thereon to the Director. Each such request shall be executed under the
penalties of perjury and contain a complete and accurate description of the device, the name and address of the
manufacturer or importer thereof, the purpose of and use for which it is intended,
and such photographs, diagrams, or drawings as may be necessary
to enable the Director to make his determination. The Director may
require the submission to him, of a sample of such device for examination
and evaluation. If the submission of such device is impracticable, the person
requesting the ruling shall so advise the Director and designate the
place where the device will be available for examination and evaluation.
[36 FR 14256, Aug. 3, 1971. Redesignated at 40
FR 16835, Apr. 15, 1975, and amended by T.D.
ATF–48, 44 FR 55842, Sept. 28, 1979]
§ 179.25 Collector's items.
The Director shall determine in accordance with 26 U.S.C. 5845(a), whether
a firearm or device, which although originally designed as a weapon, is by
reason of the date of its manufacture, value, design, and other characteristics
primarily a collector's item and is not likely to be used as a weapon. A person
who desires to obtain a determination under that provision of law shall follow
the procedures prescribed in § 179.24 relating to destructive device determinations,
and shall include information as to date of manufacture, value, design
and other characteristics which would sustain a finding that the firearm or
device is primarily a collector's item and is not likely to be used as a weapon.
[36 FR 14256, Aug. 3, 1971. Redesignated at 40
FR 16835, Apr. 15, 1975, and amended by T.D.
ATF–48, 44 FR 55842, Sept. 28, 1979]