I made this today as a Memorial day gift to myself 
I picked up a CMG infinity, a flashlight that most CPFer had one or more at some point, no one is going to give it a second look anymore.
However, there's a few things that caught my eye.
1. The head is very short, that's a good thing.
2. Many prior mods on upgrading the head with power leds have been done, great potential
3. The battery tube is pretty fat for AA light, can be bored out for CR2.
4. The thread area can clear CR2 without modding!
That's a lot of good things going at once. So, Long story short, I cut the body in two pieces.
Grind down the big long tail:
Bored the body tube with Drill/grinder to fit CR2:
Clamped up together, doing my normal JB weld trick
Several hours later, Making sure it works with CR2 power, yep, works & it's brighter than stock running AA too.
The finished product easily beat my other small CR2 lights in size, even beat the Orb raw NS,
which runs on smaller 14250 battery (CR2 is 15266, abut 2mm longer than 14250).
Left to tight:
CMG Micro CR2, Orb Raw 14250, Jill DD CR2, 47 Mini CR2, Peak Pacific CR2, 47 Ti Mini 123
& Nitecore D5 (Smallest Piston Drive flashlight in the world)
Now, how does it compare to previous CR2 record?
The smallest CR2 light record was held by ArcMania's Extreme Micro, which is 43.5mm long.
http://webcache.googleusercontent.com/search?q=cache:WlQCsaxxmcYJ:www.candlepowerforums.com/vb/showthread.php%3Ft%3D165593+extreme+micro+43.5mm&cd=1&hl=en&ct=clnk&gl=us
Jill CR2 is 52mm long (#2 spot for CR2?). The Orb Raw is smaller measured at 48 mm long, but it's not a true CR2 flashlight
(There's a earlier version of Raw that runs on CR2, but it was longer, I think it was longer than Jill DD).
Now, the moment of truth:
The CMG Micro measured in at 42.5 mm, beat E Micro by 1 mm
I know it's not a lot, but E micro was already such a small light for CR2, there's a reason that it held the record for
being the smallest CR2 flashlight for so long. ArcMania really didn't leave any room for anyone else to come & play.
For these who are thinking about dust off your old CMG infinity & take this mod a step further.
The CMG head is about 16mm long, so one can open it up & DD a XPG with RCR2 Li-ion (AW sells 15266 Li-ion).
There's room for a power LED + short reflector or a small lens, but there's probably not enough room for a board,
so most likely a DD solution will become your best bet.
I picked up a CMG infinity, a flashlight that most CPFer had one or more at some point, no one is going to give it a second look anymore.
However, there's a few things that caught my eye.
1. The head is very short, that's a good thing.
2. Many prior mods on upgrading the head with power leds have been done, great potential
3. The battery tube is pretty fat for AA light, can be bored out for CR2.
4. The thread area can clear CR2 without modding!
That's a lot of good things going at once. So, Long story short, I cut the body in two pieces.
Grind down the big long tail:
Bored the body tube with Drill/grinder to fit CR2:
Clamped up together, doing my normal JB weld trick
Several hours later, Making sure it works with CR2 power, yep, works & it's brighter than stock running AA too.
The finished product easily beat my other small CR2 lights in size, even beat the Orb raw NS,
which runs on smaller 14250 battery (CR2 is 15266, abut 2mm longer than 14250).
Left to tight:
CMG Micro CR2, Orb Raw 14250, Jill DD CR2, 47 Mini CR2, Peak Pacific CR2, 47 Ti Mini 123
& Nitecore D5 (Smallest Piston Drive flashlight in the world)
Now, how does it compare to previous CR2 record?
The smallest CR2 light record was held by ArcMania's Extreme Micro, which is 43.5mm long.
http://webcache.googleusercontent.com/search?q=cache:WlQCsaxxmcYJ:www.candlepowerforums.com/vb/showthread.php%3Ft%3D165593+extreme+micro+43.5mm&cd=1&hl=en&ct=clnk&gl=us
Jill CR2 is 52mm long (#2 spot for CR2?). The Orb Raw is smaller measured at 48 mm long, but it's not a true CR2 flashlight
(There's a earlier version of Raw that runs on CR2, but it was longer, I think it was longer than Jill DD).
Now, the moment of truth:
The CMG Micro measured in at 42.5 mm, beat E Micro by 1 mm
I know it's not a lot, but E micro was already such a small light for CR2, there's a reason that it held the record for
being the smallest CR2 flashlight for so long. ArcMania really didn't leave any room for anyone else to come & play.
For these who are thinking about dust off your old CMG infinity & take this mod a step further.
The CMG head is about 16mm long, so one can open it up & DD a XPG with RCR2 Li-ion (AW sells 15266 Li-ion).
There's room for a power LED + short reflector or a small lens, but there's probably not enough room for a board,
so most likely a DD solution will become your best bet.
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