
Availability: In Stock
Current Stock: Out of stock
The Rival Arms RA10P401A is an optic-ready slide purpose-built for the Sig P320 Full Size platform. If you're upgrading a P320 with a modern red dot sight—whether it's a Trijicon RMR, Holosun, or another compatible optic—this match-grade precision slide delivers the fit and finish you'd expect from a serious duty or competition gun. CNC machined from 416 stainless steel billet stock, it's engineered to resist corrosion and handle hard use without compromise.
The slide arrives pre-cut for RMR-pattern optics, complete with a protective cover plate. Rival Arms applies their proprietary Quench-Polish-Quench (QPQ) thermo-chemical case hardening to boost durability against normal wear—a process more commonly found in high-end AR and pistol slides. The recessed cuts are tight enough to keep your optic secure, yet the overall design maintains the factory ergonomics and profile shooters expect. Window cuts forward of the ejection port improve cooling and airflow during extended shooting sessions, a detail that matters when you're pushing round count.
Every slide is individually hand-inspected for accuracy before it ships. Installation requires no gunsmith—assuming you've got basic Sig armorer skills or the willingness to learn them. This is a core upgrade for shooters building a P320 duty rig, match pistol, or defensive carry gun that'll hold zero with a quality optic mounted.
| Brand | Rival Arms |
| Model | RA10P401A |
| Firearm Compatibility | Sig P320 Full Size |
| Optic Cut | RMR |
| Material | 416R Stainless Steel |
| Surface Finish | QPQ Black |
| Construction | CNC Machined Billet |
This slide is cut and sized for the Sig P320 Full Size platform specifically. Verify frame compatibility before purchase.
The slide is pre-cut for RMR-pattern optics. A cover plate is included. Confirm your specific optic footprint matches RMR compatibility before installation.
No gunsmith is required for installation, though you should be comfortable with basic pistol disassembly and reassembly or have access to armorer-level instruction.
The slide and a protective cover plate for the optic cut are included.

SKU: 115860720 • Width: 3in • Height: 1.7in • Depth: 9.4in • Weight: 0.8oz





Availability: In Stock
Current Stock: Out of stock
The Rival Arms RA10P401A is an optic-ready slide purpose-built for the Sig P320 Full Size platform. If you're upgrading a P320 with a modern red dot sight—whether it's a Trijicon RMR, Holosun, or another compatible optic—this match-grade precision slide delivers the fit and finish you'd expect from a serious duty or competition gun. CNC machined from 416 stainless steel billet stock, it's engineered to resist corrosion and handle hard use without compromise.
The slide arrives pre-cut for RMR-pattern optics, complete with a protective cover plate. Rival Arms applies their proprietary Quench-Polish-Quench (QPQ) thermo-chemical case hardening to boost durability against normal wear—a process more commonly found in high-end AR and pistol slides. The recessed cuts are tight enough to keep your optic secure, yet the overall design maintains the factory ergonomics and profile shooters expect. Window cuts forward of the ejection port improve cooling and airflow during extended shooting sessions, a detail that matters when you're pushing round count.
Every slide is individually hand-inspected for accuracy before it ships. Installation requires no gunsmith—assuming you've got basic Sig armorer skills or the willingness to learn them. This is a core upgrade for shooters building a P320 duty rig, match pistol, or defensive carry gun that'll hold zero with a quality optic mounted.
| Brand | Rival Arms |
| Model | RA10P401A |
| Firearm Compatibility | Sig P320 Full Size |
| Optic Cut | RMR |
| Material | 416R Stainless Steel |
| Surface Finish | QPQ Black |
| Construction | CNC Machined Billet |
This slide is cut and sized for the Sig P320 Full Size platform specifically. Verify frame compatibility before purchase.
The slide is pre-cut for RMR-pattern optics. A cover plate is included. Confirm your specific optic footprint matches RMR compatibility before installation.
No gunsmith is required for installation, though you should be comfortable with basic pistol disassembly and reassembly or have access to armorer-level instruction.
The slide and a protective cover plate for the optic cut are included.
SKU: 115860720 • Width: 3in • Height: 1.7in • Depth: 9.4in • Weight: 0.8oz
