There's only one pin nailer made by Ryobi: The 18V One+ Airstrike 23GA Pin Nailer. This is sold as both a stand-alone option and as part of a kit that comes with a 2Ah battery and charger.

But those who don't know much about these tools might not realize that there are several different kinds of nailers ... Ryobi makes four different kinds of power staplers. It has an 18V One+ ...