Trying to add weight … any suggestions

For context, I was running a 5” Platypus for USPSA, but it’s a bit lite in the A$$, and there’s not a lot of aftermarket support for it to get the weight up. I already had this Prodigy so I decided to start running it, and I’m wondering if there are any practical solutions to adding more weight? The aluminum grips don’t seem to add much if at any at all and I kinda like the stock grip… I got a weighted mainspring house and weighted magwell. Is there anything I’m missing besides a light?