Description
Enhance Your Polymer80 Build with MAS Defense Frame Rail Kit
Transform your PF-Series Polymer80 standard frame into a high-performance firearm with the MAS Defense Frame Rail Kit. Designed specifically for compatibility with Glock G17 and G22 models, this kit provides the essential foundation for a reliable and accurate custom pistol build. Whether you’re a seasoned gunsmith or a DIY enthusiast, these rails deliver the precision and strength needed for a professional-grade finish.
Why Choose This Frame Rail Kit?
Building a Polymer80 pistol requires attention to detail, especially in the frame assembly. The MAS Defense Frame Rail Kit addresses common challenges by offering:
- Perfect Compatibility: Engineered to fit PF-Series Polymer80 standard frames (PF940S) without modification, ensuring seamless integration with G17/G22 slides and components.
- Enhanced Durability: Made from high-quality materials, these rails resist wear and corrosion, providing long-lasting performance even under rigorous use.
- Improved Accuracy: Precise machining ensures optimal slide-to-frame alignment, reducing play and enhancing shooting consistency.
- Easy Installation: Designed for straightforward assembly, making it accessible for builders of all skill levels when paired with proper tools and guidance.
Key Features and Benefits
This kit includes all necessary rails to complete your Polymer80 frame, offering a reliable upgrade over stock components. Key benefits include:
- Reliable Functionality: Ensures smooth slide operation and reliable feeding, critical for self-defense or competitive shooting applications.
- Cost-Effective Solution: Provides an affordable way to enhance your build without compromising on quality, compared to more expensive custom options.
- Versatile Use: Ideal for home-built pistols, training firearms, or backup weapons, adding value to your gun collection.
- Trusted Brand: MAS Defense is known for producing aftermarket parts that meet high standards, giving you confidence in your purchase.
Technical Specifications
For builders who prioritize details, this kit is designed with precision in mind. It matches the specifications of OEM Glock rails while being optimized for Polymer80 frames, ensuring a snug fit and reliable performance. Always verify compatibility with your specific model and consult installation guides for best results.
Why Buy from Americans Gun Shop?
At Americans Gun Shop, we are committed to providing quality products and exceptional service to firearm enthusiasts. Here’s why you should choose us:
- Expertise: Our team has extensive experience in firearms and aftermarket parts, offering reliable advice and support.
- Trustworthiness: We source products from reputable manufacturers like MAS Defense, ensuring authenticity and performance.
- Customer Focus: We prioritize your satisfaction with fast shipping, secure transactions, and responsive customer service.
- Community Support: As a dedicated gun shop, we support responsible ownership and the Second Amendment, making us a trusted partner in your shooting journey.
Upgrade your Polymer80 project today with the MAS Defense Frame Rail Kit. It’s a smart investment for anyone looking to build a reliable, accurate, and durable custom pistol. Order now and experience the difference quality parts can make!

| Compatibility | PF-Series Polymer80 Standard Frame (PF940S), Glock G17/G22 Models |
| Material | High-Quality Steel or Alloy (exact material not specified) |
| Included Components | Frame Rails for Complete Assembly |
| Installation | Requires Basic Gunsmithing Tools |
| Brand | MAS Defense |
| Application | Custom Pistol Builds, Aftermarket Upgrades |
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Ryan D. (verified owner) –
Second time ordering from here. Always reliable.
Monica S. (verified owner) –
I’ve been shooting for 21 years and I’m picky about where I buy accessories online. Americans Gun earned my business. The MAS Defense Frame Rail Kit for PF-Series Polymer80 G17/G22 Compatible Builds arrived in 3 days, packaged well, and fit my Glock 19 without any modification. I put 409 rounds through it that same weekend and had zero issues. The finish quality is better than I expected at this price point. I’ll be back for more.
Megan B. (verified owner) –
Third purchase from this store. Consistency is what keeps me coming back — same quality every time, ships when they say it will.
Angela D. (verified owner) –
Everything arrived in perfect condition.
Derek P. (verified owner) –
Been in the market for a while and finally decided to buy from Americans Gun. I was comparing this against similar products from eBay and decided to take the chance. Glad I did. Arrived in 5 days, well-packaged, and the quality speaks for itself. Installed it on my G17 Gen4 and ran 306 rounds through it without a single hiccup. This is the real deal.