The Lightning Link is in fact legal in the US, however they are BATF registered items. SWD is out of business now. The idea was to allow cheaper (cheaper, not cheap) conversion to full auto. A legal, registered LL goes for upwards of $8000.00. They were designed to be used in "host guns" (like the Norrell F/A trigger groups for 10/22's) and were removable to restore semi auto operation. From what I've seen, there are less than 1,000 in the US.
Durablity is an issue, and if the link's paddle breaks, it cannot be replaced, only repaired. Since they are serialized, if the serial number is damaged it is considered "catostrophic damage" and you're out the money, period.
The LL can be tranferred between "host guns", but is kind of a, well, rudimentary, way to get F/A. If you look at one, you'll see how simple it is. There were also some issues with the series of bolt carriers that were off the shelf compatible. An AR carrier will not work. Neither will a standard M16 carrier. I think the orignal design was intended for the SP1 carrier.
For $8,000 plus the transfer tax, I would skip it.
"People live too long, dogs don't live long enough" - FTF Member-
Last edited by jeepcreep927; 11-22-2008 at 04:41 AM.