A quick explanation of the difference between the two conversion methods;
Drop-in auto sear, (DIAS) - Mimicks the original factory sear and requires all the factory MG parts, with the exception of the factory auto sear to be installed. The gun acts as an original factory full auto in that it is select fire.
Lightning Link- Simply drops into a standard AR15 and allows the gun to fire full auto ONLY. The gun uses all its original factory semi auto parts.
(there is a conversion of the selector out there that allows select fire, but these are rarely seem). The link works by using the back of the bolt carrier to trip the semi sear upon closure. Timing is everything with these as you will get light hammer strikes if not timed correctly.
The Lightning Link is the most common method of illegal conversion, as it is easy to manufacture in your garage. Many are made from old hacksaw blades. It is easy to open the gun, remove and toss far away should local law enforcement come upon you in the old rock pit. I'm not advocating this, as all my MGs are legal, but simply detailing the reality out there.
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