I'm sorry, I didn't realize they've changed the strobe electronics' location in the gen3... It seems like the strobe is now integrated and can't be removed by changing the tailcap...
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previously they sold the gen2 alpha as well, but seems like it's gone now, so your best bet is to get one used.
To be fair about the rechargeable batteries, the Elzetta is a hardcore heavy use flashlight, so you wouldn't want to use anything other than good old CR123s in it, as that can handle the cold way better, and also can't go into deep discharge.
Thanks, fulee! That's OK. Due to the exact design, this is only a marginal issue for me, not a serious one (as it is in some other lights). I still carry it regularly and will continue to do so, and can live with it as is. The 'prioritized tradeoffs' still add up to a near perfect light for a lot of my needs. Also, the Gen3 meets my overall needs much better than the prior version. The Gen3 Alpha made me a new Elzetta customer.