YES FAI DORRA!!!
Take note - make sure your sling hook can fit through that small hole. I know my Magpul MS3 wont.
I learned my lesson the hard way when I started out (e.g. the Magpul RSA and ASAP I had bought). These days, the only "expensive" parts I buy are those that are critical components/parts that I really want/or too lazy to make. Everything else I go cheap, like my $30 compensators.