lots of info here on them , the search engine and google is your friend , very accurate rifles .
i'll touch on a few things that others have already mentioned ...
keep your fingers out of the action , it makes garand thumb look like a mosquito bite .
the magazine is worth more than half the value of the rifle , DON"T lose it .
although it will fire one hundred sixty grain ammo , it was designed for one forty .
there is a piece of literature out there that recommends "oiling or greasing ammo" to aid in ejection of cases , DO NOT DO THIS EVER . it will cause excessive rearward bolt thrust that can tear apart a rifle , and shooter .
ammo must be clean and dry always
when reloading use a power similar to imr 4064 in burn rate , as slower burning powders cause too much pressure in the gas system .
adjustable gas system . the hakim rifle has it , the AG-42 should have had it . it is easy enough to do , and will allow you to safely use slower burning powders and all ammunition .... it also makes finding the brass easier .
magazines , the hakim mag will work with little to no modification . the other magazine that an be made to work is one off of the mg13 .
btw the floating firing pin will dent the primers . I haven't had a issue with a out of battery firing , but I no longer use my rifle unless i'm also using cci#34 primers .
I have also been told to avoid all federal primers , and by extension all federal ammo in this rifle , at all costs , due to the fact that federal primers are more sensitive than others .