Is it the Yugo M70? Those have a shorter hand-guard. A lot of the parts are different on that particular model. I have one and had bough the receiver cover that has three rails on it and being it was for your garden variety AK clone it was too long. I ended up cutting it down to get it to fit.
Truth be told I can't remember seeing much of any parts that replace the hand-guard.
Apex Gun Parts has some wood tha tare pulled off old commie rifles but the can be a little rough but they can be cleaned up some and made presentable I think I like the rail further back anyway though. Here's mine for reference...