Polymer80 PF320PTEX P320 80% Frame

The PF320PTEX is an 80%-style P320 pistol frame, cut for Sig Sauer P320 slides and fire control groups. This is a stripped, unfinished receiver—you’ll need a slide assembly, barrel, and parts kit to complete it. The frame ships with a jig and drill bits for final machining. Legal in most states as an unfinished receiver, but always verify your local and state laws before ordering.

Weighing in at 5.8 oz, the PF320PTEX is molded from reinforced polymer with a textured grip and undercut trigger guard for a solid grip and better finger clearance. The frame uses Sig’s standard accessory rail, so your lights and lasers will drop right on. The rear chassis block accepts P320 FCUs, and the front rail locks up with factory slides. No fitting required if you’re running OEM parts, but aftermarket slides might need minor adjustments.

This isn’t a complete pistol—just the frame, jig, and tools to finish it. You’ll need a P320 slide, barrel, recoil spring, and internal parts kit to get it running. The PF320PTEX is one of the cleaner P80-pattern frames for the P320 platform, with no extra bulk or awkward contours. Drill the pin holes, drop in your FCU, and pair it with your slide of choice.