The OK Zoomer V2 by Uberclay is a 3D-printable frame for the Ruger SR45, based on FreeMenDontAsk’s SR design with Bishop shell elements from Unseenkiller. It uses an SR9/40/45 rear rail and a Glock mag catch spring, and is compatible with Glock 21 magazines. Printed at 8 walls/100% infill, it assembles with standard SR45 parts kits and basic gunsmithing tools. The guide covers mag catch installation, rail fitment, trigger and locking block setup, and optional removal of the magazine disconnect. While tuned for reliability, correct rear pin clocking is critical, as most malfunctions stem from misalignment.