Here is a parts list + price for crealent aspherical zoom 66mm torch running off a single 18650 battery or 12volt it cost about £60 to built these. I don’t use a collimator head (66mm) for airgun ranges I just use the UF-T20 torch.You will need some ptfe tape to put on the torch threads.
Big thanks to sunndog for posting his findings.
Sunndoggs post viewtopic.php?f=31&t=1955
Parts list 1, Torch running off 1 x 18650 battery
CRELANT Collimator Aspherical Zoom Head for 7G5 V2 CS Flashlight from here here 38.33 us dollar
UniqueFire UF-T20 Cree XM-L T6 3-modes 1200Lumen Zoomable LED Flashlight Torch 19.80 us dollar from
http://www.aliexpress.com/item/UniqueFi ... 30113.html
ptfe tape 99p from here
http://www.ebay.co.uk/itm/Fastpak-100-P ... 231c54b7cc
Led driver 2.90 us dollar from here
http://dx.com/p/17mm-1050ma-single-mode ... -5v-127687
Osram Olson ir led 13 euro delivered from here
http://www.led-tech.de/en/High-Power-LE ... 6_207.html
Parts list 2, Torch running off 12volt battery
Li-po battery + charger from here £14.18
http://www.ebay.co.uk/itm/300758690956? ... 1439.l2649
Led driver 4.08 us dollar from here http://kaidomain.com/product/details.S002982
12 volt panel mount socket and dc power plug from here £2.79 from here
http://www.ebay.co.uk/itm/2-x-DC-Power- ... 2a292770fc
If i have missed anything im sure you will tell me
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