:banghead: :banghead: :banghead:
As I've said MANY, MANY, times before, and provided citations to explain, constructive possession has NOTHING to do with being able to construct an item. Constructive possession relates to excercising dominion and control over an item, but not actually having the item in your physical possession. For example, when your car keys are in your pocket you physically possess those keys, however, when you set them on the kitchen counter and go sit in the living room to read your mail and watch TV, you still possess those keys because you intend to exercise dominion and control over those keys despite the fact that they are not actually in your physical possession at that time. When those keys are on the kitchen counter you have "constructive possession" of the keys. It has nothing to do with ability or intent to make a set of keys.
I sure wish people would learn the facts about the topics they wish to spout off about.
Also, as I've explained before the issue of parts for a machinegun, silencer, and/or destructive device becomes important because of how Congress defined those items in the law.
Congress decided the definitions of machineguns, silencers, and destructive devices included a collection of parts, and parts intended solely for making the firearm:
Definition of a silencer: 18USC921(a)(24) "The terms "firearm silencer" and "firearm muffler" mean any
device for silencing, muffling, or diminishing the report of a
portable firearm, including any combination of parts, designed or
redesigned, and intended for use in assembling or fabricating a
firearm silencer or firearm muffler, and
any part intended only for
use in such assembly or fabrication."
Definition of a machinegun: 26USC5845(b) "The term "machinegun" means any weapon which shoots, is designed
to shoot, or can be readily restored to shoot, automatically more
than one shot, without manual reloading, by a single function of
the trigger. The term shall also include the frame or receiver of
any such weapon,
any part designed and intended solely and
exclusively, or combination of parts designed and intended,
for use
in converting a weapon into a machinegun, and any combination of
parts from which a machinegun can be assembled if such parts are in
the possession or under the control of a person."
Definition of a destructive device: 26USC5845(f) The term "destructive device" means (1) any explosive,
incendiary, or poison gas (A) bomb, (B) grenade, (C) rocket having
a propellent charge of more than four ounces, (D) missile having an
explosive or incendiary charge of more than one-quarter ounce, (E)
mine, or (F) similar device; (2) any type of weapon by whatever
name known which will, or which may be readily converted to, expel
a projectile by the action of an explosive or other propellant, the
barrel or barrels of which have a bore of more than one-half inch
in diameter, except a shotgun or shotgun shell which the Secretary
finds is generally recognized as particularly suitable for sporting
purposes; and (3)
any combination of parts either designed or
intended for use in converting any device into a destructive device
as defined in subparagraphs (1) and (2) and from which a
destructive device may be readily assembled. The term "destructive
device" shall not include any device which is neither designed nor
redesigned for use as a weapon; any device, although originally
designed for use as a weapon, which is redesigned for use as a
signaling, pyrotechnic, line throwing, safety, or similar device;
surplus ordnance sold, loaned, or given by the Secretary of the
Army pursuant to the provisions of section 4684(2), 4685, or 4686
of title 10 of the United States Code; or any other device which
the Secretary finds is not likely to be used as a weapon, or is an
antique or is a rifle which the owner intends to use solely for
sporting purposes."
You see the part (and or parts) themselves are the machinegun, or silencer, or destructive device.
However, as I often say, please don't take my word for it. Please seek the advice of legal counsel that is competent in matters of applicable federal, state, and local firearms laws.