Furniture is same for all AR that is thermostat and over that is the layer of other material that gives color in Orange or black..
If our government focus on national defense as much as in import such low quality would not be there, before compare rifles you should compare workshops, machines, labor working condition and over all the system management, Improve and tune these first and then there will be quality, we often forget the stance of gov towards national defense industry and go straight for the product quality with out realizing where and how in what condition these are made compare to what other develop nations..
Private sector is very good, TATA showed its small arms in defexpo 2012, If they make INSAS it would be in much - much better manufacturing quality, And they have ability to upgrade all firearms, after-all i wish for a better INSAS every day..