OP look hard at what you need dbals are $1000+ when you have the ir illumn on them. I bought my nods in 2007 I am not rich .Here is my set up.
3 years of weekly night operations or training in the army, plus 1 year of cobat ops in Iraq plus 10 years of watching the civilian market make ir & NVD more available. led me to this answer - I
have the price of one dbal D2 in the optic$400 tlr-2 IR, $600 & the surefire 300$150.
the ir laser is visible to 700 meters the ir led is usable to about 200 meters my night vision is gen 2 + weather is a huge factor in IR performace.
the remote tail switches offered by stream light will work with Dbal plugs. there is also one with an off option.
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this is a surefire x300 on a 45 degree mount, and a stream light tlr-2 eye safe all IR = ir led illumination & IR class 1laser on a 90 degree mount
the setup is very narrow &clean using the surefire dual switch to turn on either light. both lights have a off switch to prevent ADs