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Posted: 4/15/2009 5:18:33 PM EDT
| I understand how the mechanical part works, but there's a lot more to it than just dropping one in. I assume the lower has to have select-fire FCG parts; does that mean that the RDIAS is "married" to one lower? Or can you move the device to another lower? |
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This pretty much explains it all. http://www.quarterbore.com/nfa/dias.html |
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Quoted:
I understand how the mechanical part works, but there's a lot more to it than just dropping one in. I assume the lower has to have select-fire FCG parts; does that mean that the RDIAS is "married" to one lower? Or can you move the device to another lower? The Quarterbore link has all you need to know about how an RDIAS works. As far as your questions in red, 90% of the transferable RDIAS are not married to their hosts and can be moved from one lower to another. However, there are a few out there which were married to their host guns during the registration process, and ATF sez no legal divorce is possible now. The married examples came about when individuals filed Form 1's to make their ARs into machine guns but then, instead of milling and drilling the receiver, they bought unserialed DIAS and installed them. In these cases, the DIAS itself has either no serial number, or is engraved with the same serial number as the host gun. The net effect is that the receiver is the registered part, so the DIAS cannot be moved to a different host firearm; at the same time, the receiver cannot be milled-and-drilled today because that action would constitute manufacture of a new, post-1986 machine gun. "Married" DIAS-and-hosts are valued significantly lower than true RDIAS. |
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That all makes more sense to me now. Thanks for the info.
Does owning an RDIAS insulate one from problems that might crop up from having more than one AR with select-fire FCG parts installed? Or is it better to keep just one receiver set up that way and move the internal parts when moving the RDIAS to a different rifle? |
| No. You can't have other full auto fire control parts in more then the rifle that has the RDIAS is in. The bolt is ok, but the other "full auto parts" are considered part of the MG. You are only supposed to have full auto parts in the rifle that has the RDIAS in it at the time. |
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The married examples came about when individuals filed Form 1's to make their ARs into machine guns but then, instead of milling and drilling the receiver, they bought unserialed DIAS and installed them. In these cases, the DIAS itself has either no serial number, or is engraved with the same serial number as the host gun.
Could one of these guns be a legitimate use for a "Shotgun News" DIAS if the married one you had were damaged somehow? |
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Quoted: Worse than that, ATF sez the are Unregistered Machine Guns:Quoted: I understand how the mechanical part works, but there's a lot more to it than just dropping one in. I assume the lower has to have select-fire FCG parts; does that mean that the RDIAS is "married" to one lower? Or can you move the device to another lower? The Quarterbore link has all you need to know about how an RDIAS works. As far as your questions in red, 90% of the transferable RDIAS are not married to their hosts and can be moved from one lower to another. However, there are a few out there which were married to their host guns during the registration process, and ATF sez no legal divorce is possible now.   |
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Quoted: The married examples came about when individuals filed Form 1's to make their ARs into machine guns but then, instead of milling and drilling the receiver, they bought unserialed DIAS and installed them. In these cases, the DIAS itself has either no serial number, or is engraved with the same serial number as the host gun. Could one of these guns be a legitimate use for a "Shotgun News" DIAS if the married one you had were damaged somehow? No, see the above letter. |
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Quoted:
No, see the above letter. Wow, yet another reversal of position from the BATFE tech branch. The correct thing for them to have done, of course, was to permit tax-free registration of all extant unserialled drop-in auto sears in October of 1981, instead of making up the "pre-October 1981" definition, but that would have added too many new mg's to the registry with no tax dollars to show for it. |
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Quoted: Quoted: No, see the above letter. Wow, yet another reversal of position from the BATFE tech branch. The correct thing for them to have done, of course, was to permit tax-free registration of all extant unserialled drop-in auto sears in October of 1981, instead of making up the "pre-October 1981" definition, but that would have added too many new mg's to the registry with no tax dollars to show for it. People keep writing letters, we keep getting new opinions. I think this one blindsided a lot of people who thought they were "grandfathered in". |
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