This has been asked several times, and I think each time the best answer is that it is worth the value of the sum of the parts.

Naturally having a scope is important, the leather cheek piece(?), and the flash hider is important too. A GI prong type flash hider is in the $100 range, the cone type flash hider is in the $300 range.

If you are trying to buy, I would say in the $2K range. If trying to sell, I might ask $2500. But hey, I am not an expert on the M1icon-D. Have handled a couple.

I am always lower when I estimate prices.