She is right.
The FN/FAL is a heavy beastie.
I don’t even know what an FAL weighs but it always struck me as a trim little rifle. The HK-91 looks like it would weigh more to me but like I said, I don’t know for sure.
I owned an FN M-1949 in 7mm Mauser for a few years. I actually ordered it through the mail from J.C. Penney. Imagine that! It was pretty stocky looking and very similar in operation to the FAL except it had a wood stock and stripped differently.
I don’t recall the weight bothering me at all.