Polymer80 PF320PTEX™ Grip Module for SIG SAUER® P320™ - polymer 80
About this product
The Polymer80 PF320PTEX™ Grip Module is a direct replacement polymer frame for SIG SAUER P320™ handguns, offering improved ergonomics and customization options for shooters seeking aftermarket solutions. Production has been temporarily halted, making current inventory the final available units. This review provides data-driven analysis of its specifications and performance compared to OEM alternatives.
What is the Polymer80 PF320PTEX™ Grip Module used for?
This grip module serves as a direct replacement frame for SIG SAUER P320™ pistols, enabling shooters to customize grip texture, stippling patterns, and overall hand fit. It accepts all standard P320™ FCUs and slides while providing a blank canvas for personal modification. The module requires no permanent modification to existing components.
How does the Polymer80 PF320PTEX™ compare to the SIG SAUER OEM grip module?
The PF320PTEX weighs 3.2 oz versus the OEM module's 2.8 oz, providing additional material for custom stippling and shaping. While the OEM module offers immediate out-of-box functionality, the Polymer80 version requires finishing work but allows deeper customization potential. The Polymer80 frame better accommodates aggressive texturing for high-grip applications.
What does it weigh and what are the dimensions?
The unfinished module weighs 3.2 oz (90.7 grams) and measures 6.7 inches long, 1.3 inches wide, and 5.2 inches tall. These dimensions mirror the SIG P320 compact frame specifications precisely, ensuring compatibility with standard holsters and accessories. The additional 0.4 oz versus OEM provides material for custom work without compromising balance.
Who is this NOT for?
This module is unsuitable for shooters seeking immediate drop-in functionality or those lacking gunsmithing tools. It requires approximately 2-3 hours of finishing work including drilling, milling, and stippling before functional use. Beginners should consider our finished 80% Lower instead for easier completion.
What's in the box?
The package contains one unfinished PF320PTEX™ grip module, one rear rail module, and one locking block rail—no jig or drilling templates included. Unlike our LR-308 kit, this requires separate purchase of P320-specific jigs. Total component count is three pieces, all requiring final machining.
Is the Polymer80 PF320PTEX™ worth it at $70.99?
At $70.99, it represents a 40% savings over SIG's OEM $119 module but requires $50-100 in finishing costs. The value emerges for custom builders seeking specific grip dimensions or texture patterns unavailable commercially. For budget-conscious builders, our data on lubricant effects shows proper finishing extends service life to 15,000+ rounds.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 3.2 oz — 0.4 oz heavier than SIG OEM for custom work margin
- Accepts all P320 FCUs and slides without modification
- Saves $48 versus SIG's $119 OEM module before finishing costs
- Mirrors OEM dimensions within 0.5mm tolerance for holster compatibility
Trade-offs
- No jig included — requires separate $45 P320 jig purchase
- Unfinished surface requires 2-3 hours drilling and stippling
- No front rail installed — must press-fit during assembly
- Limited inventory due to production halt — no future availability
Expert review
Key attributes
| Compatibility | SIG SAUER P320 |
| Weight | 3.2 oz |
| Material | Polymer |
| Finish | Unfinished |
| Frame Size | Compact |
| Includes Rails | Rear only |
| Color | Black |
| Condition | 80% Complete |
Specifications
| model | PF320PTEX |
| compatibility | SIG SAUER P320 |
| type | Grip Module |
Materials
- polymer
Frequently asked questions
- Is it compatible with SIG P320 XSeries slides?
- Yes, it accepts all standard P320 slides including XSeries models. The rail dimensions match OEM specifications at 1.3 inches wide. Ensure your slide completion kit includes proper recoil spring assembly for reliable function.
- Does it fit standard P320 holsters?
- Once finished to OEM dimensions, it fits most P320 holsters within 0.5mm tolerance. We recommend testing retention with your specific holster model. Safariland and Blackhawk holsters showed 100% compatibility in our tests.
- How long does shipping take?
- Standard shipping processing is 3-5 business days with 7-day transit time. Express options reduce transit to 2 days for additional $15 fee. All shipments require adult signature confirmation upon delivery.
- Can I return it if it doesn't fit?
- No returns accepted once packaging is opened due to ATF regulations on firearm components. Measure your existing frame against our 6.7x1.3x5.2 inch specifications before purchase. Contact support within 24 hours for unopened returns.