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5/18/2014 10:08:06 AM EDT
I'm interested in collecting some P90 parts for future resale.  It is my understanding that it's OK to have P90 parts (stock, pack, switch) by themselves.  It is also my understanding that you definately cannot assemble these parts with a semi receiver.  Where it gets a bit fuzzy regarding answers I"ve researched thus far is whether or not you can have said parts and a semi (PS90) unnasembled but under the same roof, car, bag, etc.  Does anyone here know for sure?
5/18/2014 2:31:06 PM EDT
[#1]
Quoted:
I'm interested in collecting some P90 parts for future resale.  It is my understanding that it's OK to have P90 parts (stock, pack, switch) by themselves.  It is also my understanding that you definately cannot assemble these parts with a semi receiver.  Where it gets a bit fuzzy regarding answers I"ve researched thus far is whether or not you can have said parts and a semi (PS90) unnasembled but under the same roof, car, bag, etc.  Does anyone here know for sure?
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There's no such thing as "constructive intent" only "constructive possession".

As long as your P90 parts won't fit the PS90 receiver, and you don't actually alter them to fit together, you should be fine.

Something like a short P90 barrel alongside your PS90 receiver would be a no-no if the P90 barrel could be installed on the PS90 receiver, and you didn't also possess a legal-length barrel with with to assemble the PS90.
5/18/2014 2:56:33 PM EDT
[#2]
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Quoted:

There's no such thing as "constructive intent" only "constructive possession".

As long as your P90 parts won't fit the PS90 receiver, and you don't actually alter them to fit together, you should be fine.

Something like a short P90 barrel alongside your PS90 receiver would be a no-no if the P90 barrel could be installed on the PS90 receiver, and you didn't also possess a legal-length barrel with with to assemble the PS90.
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Quoted:
Quoted:
I'm interested in collecting some P90 parts for future resale.  It is my understanding that it's OK to have P90 parts (stock, pack, switch) by themselves.  It is also my understanding that you definately cannot assemble these parts with a semi receiver.  Where it gets a bit fuzzy regarding answers I"ve researched thus far is whether or not you can have said parts and a semi (PS90) unnasembled but under the same roof, car, bag, etc.  Does anyone here know for sure?

There's no such thing as "constructive intent" only "constructive possession".

As long as your P90 parts won't fit the PS90 receiver, and you don't actually alter them to fit together, you should be fine.

Something like a short P90 barrel alongside your PS90 receiver would be a no-no if the P90 barrel could be installed on the PS90 receiver, and you didn't also possess a legal-length barrel with with to assemble the PS90.


Thanks for the terminology correction.  The PS90/P90 is a bit of a unique animal in terms of how it's put together in regards to the FA parts.  The serialized receiver will work in either the PS90 or the P90.  It's all the plastic supporting parts like the trigger pack, switch, and stock that make the system work as an FA.  None of those parts are serialized.  It's almost like having an AR15 with some spare FA parts laying around.  Example - if I have a spare FA (AR) bolt carrier laying around I think I'm OK.  In the AR15's case you have to drill a permanent hole in the receiver to make it work like factory FA.  PS90/P90 isn't like that, hence my questions.  I'm thinking that simply having a P90 stock, switch, and pack laying around (since they're not the registerable parts) would be OK, but it's such a gray area when trying to compare apples to oranges.

Edit:  I'd like to add that I researched a post elsewhere explaining that constructive posession is typically applied to situations where one needs to simplay put pieces together as cpposed to fabricating them.  By this explanation, the posession of the P90 parts would be a no no.  Pretty clear BUT... that gets me thinking about all the gen 1 and 2 PS90's out there.  No fabrication required to make those FA, yet they're perfectly legal so this adds to my feeling of confusion on this matter.

Edit 2:  You could take the PS90 trigger pack and use it in the PS90 stock and lever and it will only be semi.  I'm stating this because I read something about a case where it was OK to posess parts so long as they were good for legit reasons as well, not just FA purposes.  Same thing I guess as having a bunch of AR pistol lowers, SBR uppers, SBR lowers all mixed up.
5/18/2014 5:09:01 PM EDT
[#3]
Quote History
Quoted:
Thanks for the terminology correction.  The PS90/P90 is a bit of a unique animal in terms of how it's put together in regards to the FA parts.  The serialized receiver will work in either the PS90 or the P90.  It's all the plastic supporting parts like the trigger pack, switch, and stock that make the system work as an FA.  None of those parts are serialized.  It's almost like having an AR15 with some spare FA parts laying around.  Example - if I have a spare FA (AR) bolt carrier laying around I think I'm OK.  In the AR15's case you have to drill a permanent hole in the receiver to make it work like factory FA.  PS90/P90 isn't like that, hence my questions.  I'm thinking that simply having a P90 stock, switch, and pack laying around (since they're not the registerable parts) would be OK, but it's such a gray area when trying to compare apples to oranges.

Edit:  I'd like to add that I researched a post elsewhere explaining that constructive posession is typically applied to situations where one needs to simplay put pieces together as cpposed to fabricating them.  By this explanation, the posession of the P90 parts would be a no no.  Pretty clear BUT... that gets me thinking about all the gen 1 and 2 PS90's out there.  No fabrication required to make those FA, yet they're perfectly legal so this adds to my feeling of confusion on this matter.

Edit 2:  You could take the PS90 trigger pack and use it in the PS90 stock and lever and it will only be semi.  I'm stating this because I read something about a case where it was OK to posess parts so long as they were good for legit reasons as well, not just FA purposes.  Same thing I guess as having a bunch of AR pistol lowers, SBR uppers, SBR lowers all mixed up.
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So where constructive possession comes in is if you can simply assemble the parts in your possession into an illegal configuration, and have no legal use for them, otherwise.  I'm not up enough on the intricacies of the P90 and PS90 to tell you where the constructive possession line would be on that particular firearm - but as long as you have a legal use for everything you're possessing, and don't ever assemble an illegal configuration, you should be OK.  

If you have no legal use for some FA or SBR parts in your possession, and/or no legal configurations for the dual-use parts you possess, that's where a problem would arise.
5/18/2014 5:23:12 PM EDT
[#4]
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Quoted:


So where constructive possession comes in is if you can simply assemble the parts in your possession into an illegal configuration, and have no legal use for them, otherwise.  I'm not up enough on the intricacies of the P90 and PS90 to tell you where the constructive possession line would be on that particular firearm - but as long as you have a legal use for everything you're possessing, and don't ever assemble an illegal configuration, you should be OK.  

If you have no legal use for some FA or SBR parts in your possession, and/or no legal configurations for the dual-use parts you possess, that's where a problem would arise.
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Quoted:
Quoted:
Thanks for the terminology correction.  The PS90/P90 is a bit of a unique animal in terms of how it's put together in regards to the FA parts.  The serialized receiver will work in either the PS90 or the P90.  It's all the plastic supporting parts like the trigger pack, switch, and stock that make the system work as an FA.  None of those parts are serialized.  It's almost like having an AR15 with some spare FA parts laying around.  Example - if I have a spare FA (AR) bolt carrier laying around I think I'm OK.  In the AR15's case you have to drill a permanent hole in the receiver to make it work like factory FA.  PS90/P90 isn't like that, hence my questions.  I'm thinking that simply having a P90 stock, switch, and pack laying around (since they're not the registerable parts) would be OK, but it's such a gray area when trying to compare apples to oranges.

Edit:  I'd like to add that I researched a post elsewhere explaining that constructive posession is typically applied to situations where one needs to simplay put pieces together as cpposed to fabricating them.  By this explanation, the posession of the P90 parts would be a no no.  Pretty clear BUT... that gets me thinking about all the gen 1 and 2 PS90's out there.  No fabrication required to make those FA, yet they're perfectly legal so this adds to my feeling of confusion on this matter.

Edit 2:  You could take the PS90 trigger pack and use it in the PS90 stock and lever and it will only be semi.  I'm stating this because I read something about a case where it was OK to posess parts so long as they were good for legit reasons as well, not just FA purposes.  Same thing I guess as having a bunch of AR pistol lowers, SBR uppers, SBR lowers all mixed up.


So where constructive possession comes in is if you can simply assemble the parts in your possession into an illegal configuration, and have no legal use for them, otherwise.  I'm not up enough on the intricacies of the P90 and PS90 to tell you where the constructive possession line would be on that particular firearm - but as long as you have a legal use for everything you're possessing, and don't ever assemble an illegal configuration, you should be OK.  

If you have no legal use for some FA or SBR parts in your possession, and/or no legal configurations for the dual-use parts you possess, that's where a problem would arise.


Thanks for the clarification.  Edit 3 - meant to say "You could take the PS90 trigger pack and use it in the P90 stock"  
5/19/2014 6:22:49 AM EDT
[#5]
I believe the only parts you need to convert a semi auto PS90 to a factory style full auto P90 (minus the long barrel of course) is the full auto P90 stock (which has the selector and full auto trigger linkage) and the full auto hammer pack with the semi auto disconnector that will cam out of the way when the trigger linkage is pushed all the way to the rear.

I am about 90% sure (and somebody please feel free to correct me if I am wrong) that there are no receiver differences between a PS90 and P90.  All of the "magic" is contained within the "unregulated" parts i.e. the stock and hammer pack.

Honestly, I have no idea how the PS90 ever passed tech branch muster.  The PS90 has the anti-bounce weight on the bolt and the auto sear trip.  Even the Gen 1 and 2 PS90s have the auto sear in the hammer pack and are a short 1 minute/non-permanent mod away from full auto if you were an 07/02 SOT building a post sample.

The P90 stock allows the trigger to go back farther when the selector is set to "A", which in turn allows the trigger to push fire-control linkage back farther and which cams the full auto hammer pack's semi auto disconnector out of the way, in a similar manner as the AUG.

The net is that if I owned a PS90, I would not get caught with a full auto P90 stock and hammer pack as it is a 30 second exercise to drop the PS90 receiver and bolt group into the P90 stock with the full auto hammer pack in place.

I have a SBR PS90 and know I would not want the full auto P90 parts in my possession.  At least with an AUG the semi auto receiver wont latch into a full auto stock and even then I still wouldn't keep those parts around owning a semi auto AUG.
5/19/2014 1:40:30 PM EDT
[#6]
Quote History
Quoted:
I believe the only parts you need to convert a semi auto PS90 to a factory style full auto P90 (minus the long barrel of course) is the full auto P90 stock (which has the selector and full auto trigger linkage) and the full auto hammer pack with the semi auto disconnector that will cam out of the way when the trigger linkage is pushed all the way to the rear.

I am about 90% sure (and somebody please feel free to correct me if I am wrong) that there are no receiver differences between a PS90 and P90.  All of the "magic" is contained within the "unregulated" parts i.e. the stock and hammer pack.

Honestly, I have no idea how the PS90 ever passed tech branch muster.  The PS90 has the anti-bounce weight on the bolt and the auto sear trip.  Even the Gen 1 and 2 PS90s have the auto sear in the hammer pack and are a short 1 minute/non-permanent mod away from full auto if you were an 07/02 SOT building a post sample.

The P90 stock allows the trigger to go back farther when the selector is set to "A", which in turn allows the trigger to push fire-control linkage back farther and which cams the full auto hammer pack's semi auto disconnector out of the way, in a similar manner as the AUG.

The net is that if I owned a PS90, I would not get caught with a full auto P90 stock and hammer pack as it is a 30 second exercise to drop the PS90 receiver and bolt group into the P90 stock with the full auto hammer pack in place.

I have a SBR PS90 and know I would not want the full auto P90 parts in my possession.  At least with an AUG the semi auto receiver wont latch into a full auto stock and even then I still wouldn't keep those parts around owning a semi auto AUG.
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I always thought the only real " functional " difference between a gen 1 or 2 ps90 & p90 (excluding compatible fit of trigger pack) was barrel length (obviously), selector (to allow trigger to be pulled back further), and the "wings" on the semi sear (they're too short on the PS90 & don't cam the sear down even if one did pull the disconnect or back all the way). Does that sound right or am I missing something?
5/19/2014 3:21:07 PM EDT
[#7]
That sounds right to me.
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