dark,
Why...yes there is. The Arcs use the 1.25 watt Luxeon LED and so do the dat2zip "sandwiches". Get a Madmax+ Q3L sandwich and put it in your minimag, throw in a mineral glass lens for that extra touch of goodness. The madmax+ is a voltage regulator to keep brightness even.
The Madmax+ Q3L runs $45, the mineral glass is $1.50 and a Kroll tailswitch (same switch as the Arc) runs $4.50. The sandwich comes with NX05 optics, they can be changed to McFlood optics ($8) for better flood lighting or get a Fraen low profile optics for longer throw.
The CPF has a section for products from the sandwich shoppe... check it out.