@chris95008 Thanks for contacting us and welcome to our community. I am sorry for the late reply. I pulled up your system and it does look like we have 16GB modules listed for your system. Currently, we have them bundled as a 32GB kit. This can be found here for the small form factor here for the mini tower model.
If you are looking for a listing for a single 16GB module then the best link for that would be here.
Please let me know if you have any other questions or concerns.