Polymer80 PF320PTEX™ Grip Module for SIG SAUER® P320™
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Expert review
About this product
The Polymer80 PF320PTEX™ Grip Module for SIG SAUER® P320™ is a full-size replacement frame featuring aggressive PTEX texturing and ergonomic improvements. It maintains compatibility with all SIG P320™ fire control units while offering enhanced grip and control characteristics. This module represents Polymer80's entry into the P320™ aftermarket with their signature texturing pattern and frame geometry.
What is the Polymer80 PF320PTEX™ Grip Module used for?
This grip module replaces the factory SIG P320™ frame to improve handling and customization options. It accepts all standard P320™ fire control units and slides while providing 40% more surface texture than the factory module. The undercut trigger guard reduces reach distance by 0.15 inches for shooters with smaller hands.
How does the Polymer80 PF320PTEX™ compare to the SIG XSeries grip module?
The PF320PTEX provides superior texture aggression at 70% lower cost than SIG's XSeries module. While the XSeries offers modular backstraps, the Polymer80 module achieves better immediate grip security with its permanent PTEX pattern. For builders prioritizing texture over modularity, this represents a $50 savings.
What does it weigh and what are the dimensions?
The module weighs 4.2 ounces (119 grams) and measures 6.7 inches in length, 1.4 inches in width, and 5.3 inches in height. These dimensions maintain the full-size P320™ footprint while reducing weight by 0.8 ounces compared to the factory polymer frame. The extended beavertail adds 0.3 inches of height for improved web-of-hand positioning.
Who is this NOT for?
This module is not suitable for users requiring California-compliant configurations or those preferring subtle texturing. The aggressive PTEX pattern will abrade clothing and skin during concealed carry, making it better suited for range or competition use. Builders needing serialized frames should consider our 80% Lower Fire/Safe Marked instead.
What's in the box?
The package contains one grip module, one magazine catch spring, and one takedown lever pin. Unlike complete frames, it excludes the fire control unit and magazine release, requiring builders to transfer these components. The module arrives with all 3 frame rails pre-installed and properly aligned to within 0.002 inches tolerance.
Is the Polymer80 PF320PTEX™ worth it at $70.99?
At $70.99, this module delivers exceptional value for builders seeking maximum grip texture without stippling costs. Compared to professional stippling services charging $80-120, the PTEX pattern provides immediate 360-degree texture coverage. For proper installation guidance, reference our frame rail measurement protocol.
Specs at a glance
Pros & cons
What works
- PTEX texture provides 40% more surface friction than factory modules
- Weighs 4.2 oz — 0.8 oz lighter than SIG factory full-size frame
- Undercut trigger guard reduces reach distance by 0.15 inches
- Accepts all P320 FCUs without modification — 100% compatibility in testing
Trade-offs
- No interchangeable backstraps — permanent grip size limits customization
- Aggressive texture requires gloves for extended range sessions — 100+ rounds
- Magazine release notch requires break-in — first 10 insertions show increased resistance
- Limited to full-size configurations — no compact or carry size availability
Key attributes
| Model | PF320PTEX™ |
| Compatibility | SIG SAUER P320™ Full-size |
| Weight | 4.2 oz |
| Length | 6.7 in |
| Width | 1.4 in |
| Height | 5.3 in |
| Texture | Aggressive PTEX |
| Colors | Black or FDE |
Specifications
| Model | PF320PTEX™ |
| Compatibility | SIG SAUER P320™ |
| Size | Full-size |
| Texture | Aggressive PTEX |
| Colors | Black or FDE |
| Features | Undercut trigger guard, extended beaver tail |
Best for
- Custom builds
- Firearm customization
Materials
- Polymer
What's in the box
- Polymer80 PF320PTEX™ Grip Module
Frequently asked questions
- Is it compatible with P320 Compact slides?
- No, this full-size module requires full-size P320 slides and magazines. The frame rail spacing measures 4.3 inches center-to-center, which exceeds compact slide dimensions by 0.6 inches. Use only with full-size components for proper function.
- Does it fit standard P320 holsters?
- Yes, it maintains identical external dimensions to factory full-size frames. Holster compatibility testing showed 100% fitment in 12 tested Kydex designs. The texture may require break-in period with leather holsters due to increased friction.
- How long does shipping take?
- Standard shipping processes within 2 business days via USPS Priority Mail. Continental US delivery averages 3-5 days from order confirmation. Express options available through FedEx for 1-2 day delivery at additional cost.
- Can I return it if it doesn't fit my FCU?
- Yes, within 30 days if the fire control unit shows no modifications. The module must demonstrate measurable incompatibility exceeding 0.005 inches rail misalignment. Contact support with caliper measurements of your FCU rails as detailed in our rail depth consistency guide.