The Next Generation Squad Weapons program is one of the Army's 35 modernization priorities.
breakingdefense.com
Upto $2.7B for 250k optics i.e. each optic/FCS is ~$10k
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There are two factors working here.
First and foremost; as others have clearly mentioned, budget.
For them this $10K sight is of almost same value as a $7xx EoTech would be for us; if we see the cost as percentage of budget.
Second and the bit surprising one; a fire control system for $10K is comparatively cheaper.
What we actually see as a Vortex or L3Harris sight is actually two seperate systems working together; one is an "active reticle" and other is a LPVO.
1. If we look at all the available "active reticle" sights or those smart scopes that constantly changes the zero to compensate for different parameters, we can get an estimate.
- FN FCU; no data about cost but only a handful of systems have been spotted in wild. This can give a good idea about the cost.
- FN Elity; as of now no data on sales.
- Smash 2000; closest rival to NGSW-FC. Each sight costs $13.5K
- TrackingPoint; $6K. But worth noting is that it's exponentially large compared to NGSW-FC and also a hunting sight; not military specs.
2. As for the 1-8x 30mm LPVO part, it's very straightforward to get the price. It'll be in the ballpark of $0.5K.
Combining both you get a range of $6.5-14K.
But there is massive flaw in this assumption. There are two things which NGSW-FC brings on the table for the very first time.
- displaying an active reticle on top of a 1-8x LPVO. Be it Smash or Elity or BORS; no one does this.
- higher efficiency in term of SWaP.
Hope this would make things bit more clear.