Upgrade Your PF9SS & G43 Builds with the NQI PFSS Rear Rail System
The NQI PFSS Rear Rail System (RRS) is engineered for shooters who demand tighter tolerances, superior durability, and a smoother shooting experience. Crafted from American-sourced 17-4 stainless steel and precision CNC milled, this rear rail system stands far above standard MIM or stamped parts, delivering exceptional stability and improved accuracy for your single stack builds.
Unlike heat-treated rails that can accelerate slide wear, our non-heat-treated design intentionally allows the rail to be softer — so it wears over time, protecting your slide and extending its life. This makes it a smarter investment for serious builders who want performance without unnecessary wear on expensive slide components.
Whether you’re building a PF9SS, G43, or customizing your striker-fired platform, this rear rail system ensures better trigger feedback and more consistent travel. Some builders choose to perform final honing for a completely flat rail surface, though it’s not required for most applications.
Key Benefits
- ✅ 17-4 American stainless steel — corrosion-resistant & built to last
- ✅ CNC milled precision — eliminates sloppy tolerances of MIM/stamped parts
- ✅ Non-heat-treated — designed to wear in favor of protecting your slide
- ✅ Compatible with PF Frame Rail Kits & Rook Tactical components
- ✅ Supports improved trigger travel & feedback on GLOCK® & P80 platforms
- ✅ Optional fine-tuning (honing) for perfection seekers
Install & Customize with Ease
This rear rail system is designed for straightforward installation, but attention to detail matters. Some final fitting or minor gunsmithing may be required based on your drilled holes and lower parts kit. Using tools like a Dremel, peanut grinder, or an armorer’s back plate can help achieve optimal engagement between the striker lug and trigger bar.
Check out our step-by-step videos under the manuals section for advanced tips on achieving a flawless fit.
Important Notes
- Always ensure 100% engagement between striker lug and trigger bar.
- Never force pins into place — take your time and shape the taper as needed.
- If in doubt, consult a professional gunsmith.
Order the NQI PFSS Rear Rail System today from No Quarter Innovations and give your PF9SS or G43 build unmatched precision, smoother trigger travel, and superior long-term reliability.
SHIPPING RESTRICTIONS
This item is restricted from shipping to California, Colorado, Connecticut, Hawaii, Illinois, Maryland, New Jersey, New York, Oregon, Rhode Island, Washington D.C, and the Pennsylvania cities of Philadelphia, York, and Reading.
