on the
hcigar Stingray clone, with an IMR AW 18490 the kick works perfectly without the small extension tube, you can also get it to kick with an Efest IMR F.T. 18650 but you cannot screw the bottom fire button all the way, some threads will be showing....
whatever you do,...do NOT, i repeat do NOT try to adjust the fire button switch or take it apart soon as you do the magnet inside will fly away and unless you can find it your Mod will be disabled....and if you do find the Magnet, putting it back into the switch is a nightmare.
any-how i love mine (Brass) & it Rocks with a Kayfun 3.1, even enjoying the polishing.
been getting alot of positive comments from friends, i feel like i made a good purchase.