A novel in the works needs a bit of assistance and I believe this might be an appropriate audience to canvas in that effort.

Let's assume an AK is needed to take on the functionality of the M4 SOPMOD program as much as possible. However, the customer -- let's assume he's an official end-user, neither wants nor can he afford the M4 system.  So....what would you offer and more importantly why?  I want to know of specific manufacturers and their products.

Thank you in advance.  In all liklihood, the story line will limit the notional weapon to the M43 chambering.

Thank you!