JRH6856
Member
Sights, grips, holsters, and magazines are the only things for which I would consider paying or asking extra.
About the only thing there that adds value for me would be magazines. Sights would have to be an upgrade of fixed to adjustable or open to optical, and even then the new ones would have to be really high end. Grips and holsters generally don't do anything for me as I am left handed and have relatively small hands. But if it happens to be a left handed holster, that is a plus.