Please not surefire models does not fit a 18650 battery unless it has been bored
This is a one cell bulb. You can only use 1 18650 or 1-13640 or 18350 max volts of 4.2 (if you use two batteries it will damage the bulb)slightly used very custom tactical P60 Drop In. This drop in will fit the Surefire 3P, 6P, G2 and a ton other P, C & M series Surefire flashlights. It will also fit into a variety of Solarforce lights, as well as, any flashlight that will accept a P60 drop in. I started by polishing the brass P60 pill and the outer part of the aluminum reflector. I then machined a retaining ring which not only holds the FET driver in place, it also grounds it. Additionally, I machined a sleeve which would sit in the place where the large P60 spring would reside, helping to complete the electrical circuit by making solid thermal contact with the inside diameter of the flashlight. While unneeded, I will still include the large P60 spring in this auction. Both the FET driver retaining ring, as well as, the outer contact sleeve (again, which replaces the large P60 spring that is normally used) are machined from 145 Tellurium Copper; which very much increases the thermal transfer of heat, aids in the efficiency of electrical contact and just plain looks good. Please see the pictures and ask any questions if needed.

The P60 build includes the following features:

1x CREE XPL V6 0D on a 16mm solid copper Noctigon MCPCB. The Noctigon MCPCB is directly reflow soldered to the brass P60 pill to allow for optimum thermal transfer of heat
A MTN-17DD "direct drive" driver featuring an ultra low resistance FET, loaded w/ Guppydrv Rev2 firmware; the ultimate in user customizability which features 24 different built-in user groups. (Unless the buyer requests a specific user group I will ship this P60 w/ the user group #8 selected and the Turbo Timer set to 60 seconds). Additionally, the driver includes a large resilient spring w/ is elegantlybypassed w/ solder wick
A Thermally conductive electrical isolation pad sits between the Noctigon MCPCB and the aluminum reflector both allowing for the optimum thermal transfer of heat, as well as, ensuring that the reflector never comes in contact w/ the MCPCB causing a short in the unit
Lastly, a combination of thermal compound and copper foil/tape is used on the threads where the brass pill is connected to the aluminum reflector. This allows an even greater oppertunity for the thermal transfer of heat
I took every oppertunity there is to ensure the maximum amount of heat is pulled away from the emitter ensuring a long lasting life for the unit
This P60 runs using 1x Lithium Ion battery ONLY, further, it is recommended that the user use IMR based 18350 or IMR 18650 Li-Ion's w/ this P60. The use of any other type of battery with this drop in will be at the users risk.
This auction is for a P60 drop in only. No flashlight will be included. Lastly, the P60 was tested using a single 18650 at a draw of 5.5A. CREE rates this LED as having 1226 lumen while running at 3A. With a fully charged cell, running at 5.5A it is estimated that this drop in puts out about 2,200 Lumens. This drop in is insanely bright and has some of the best throw that I've seen with a small, very defined, hot spot and narrow beam angle. This is the drop in if you're a fan of throwers!

this flashlight has a user interface called guppydrv

This firmware allows the ultimate in user customizability, with 20 built-in mode groups, that the user can select via a series of button presses and a user programmable turbo timer that will automatically step the power down to 50% after the set time is hit (see below for instructions).

Low voltage protection: With 1S cells (non-zener mod) the light will begin to step down output at around 2.8v under load. The light will not shut completely off, but will continue to run at a moonlight level.

Guppydrv ​Instructions

To switch mode groups: rapidly tap the switch 8 times, the light will then enter the programming mode and begin to flash. With the light in programming mode, tap the switch the same number of times as your desired mode group. The light will blink and your mode group will be memorized.

Example: To select mode group 3, tap the switch 8 times quickly to enter programming mode. As soon as the light enters programming mode and beings flashing, tap the switch three times. The light will blink to recognize the mode group change.

To set the turbo timer: rapidly tap the switch 8 times, the light will then enter the programming mode and begin to flash. With the light in programming mode, tap the switch 30 times to enter the turbo timer set mode. The light will then switch to 100% power. When the light is at the desired temperature for the turbo step down, turn the light off. The turbo timer will then be set. The turbo timer steps the light down to 50% regardless of the mode group set.

Rev.2 User Selectable Groups:100% Only5% - 100% | Memory5% - 100% | No Memory30% - 100% | Memory30% - 100% | No Memory70% - 100% | Memory70% - 100% | No MemoryML - 30% - 100% | MemoryML - 30% - 100% | No Memory100% - 30% - ML | No MemoryML - 5% - 15% - 50% - 70% - 100% | MemoryML - 5% - 15% - 50% - 70% - 100% | No Memory100% - 70% - 50% - 15% - 5% - ML | No MemoryStrobe Only100% - Strobe | No MemoryStrobe - 100% | No Memory100% - 1Hz Blink | No MemoryML - 5% - 30% - 70% - 100% - Strobe - 1Hz Blink | No Memory100% - 70% - 30% - 5% - ML - Strobe - 1Hz Blink | No Memory5% - 30% - 100% - 1Hz Blink - 3Hz Blink - Strobe - Beacon | No Memory


** depending in what setting you have this bulb at after 30 sec. The bulb will reset to the first mode if it is in a no memory setting or it will memorize the last mode if it is in a memory setting. If you turn the flashlight off then back on before 30 sec the bulb will go to.the next mode.
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Free shipping to all 50 states! International shipping will be extra based on location. If you have questions, please ask! Thanks!!