Bravo tubes are the secret sauce for thrifty spenders. In this case you get all the power and performance of a white phosphor tube (Ghost) with a few hundred bucks knocked off because of a few black spots somewhere in the field of view. In my experience this means nothing but a money savings. Call them spots, or artifacts, or pepper, rarely have I come across them with the size and location to be more of a problem than it's worth in money-savings. They are regular occurrences in intensifier tubes, like moles on someone's face. You look over them after a while and never notice them. If spots are in the center viewing area, that's a deal-breaker, but I have not seen such examples.
The MNVD is a bit smaller in footprint than a PVS-14 and fits the hand differently but well. Has a push button power switch and a rubber covered IR button that's easier to use than the dial-type on a PVS14. Ocular and objective adjust smoothly and the optics seem to be precision instruments.
The largest difference between the NMVD and a PVS14 is the mount. This unit uses a legacy mount that does not have the options that the dovetail on a PVS14 offers. I use an aftermarket mount adapter called a JDAOT that allows me to use a PVS14 horn mount on it, and it works ok. There are headmounts available though and other adapters to use this on a helmet also.
I love the option of using a CR123 battery OR an AA! Just reverse a part in the battery cap. This has manual gain control and an IR illuminator.
This...
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