Well, no responses in several hours. Let me take a stab at it.
If I understand you correctly, you want some type of rail system that will allow mounting of a laser and/or flashlight.
You also want to retain your original, non-railed forearm.
Do you have any idea as to where you would prefer to have these rails?
Based upon what you have told us, I would thing that I barrel-mounted universal Tri-rail may work.
Look up Tickbitesupply.com and you can find them. I had a 3" on on an AK barrel a while back that worked well. The railed block mounts to your barrel with 4 screws. This may not be that great if you are worried about the affect of weight on your barrel, but it may not be a problem for you.
In addition, I *think* I saw a rail that attached through your Triangle Front Sight Base that will but a rail on either side of the Front Sight. But I can't remember for the life of me where I saw it. I think it may have been Bravo Company or Model 1 Sales.
I hope this helps.
-- John