MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds
- Firearms ship to the FFL dealer you choose, in any state
- Free shipping on orders over $99 · ships in 1–2 business days
- 30-day returns on unused parts and accessories
Specs at a glance
About this product
Precision Drill Bits for Your Polymer80 Build
When building your own Polymer80 frame, precision is everything. The MAS Defense M3/M4 Drill Bits are engineered specifically for this purpose, providing the exact tooling needed to complete your P80 lower receiver with professional-grade results. These bits are not ordinary hardware store drill bits—they're manufactured to the tight tolerances required for firearm components, ensuring your build goes together smoothly and functions reliably.
Why These Drill Bits Are Essential for Polymer80 Builds
Polymer80 frames require specific hole sizes for proper pin and component fitment. Using incorrect or low-quality drill bits can result in oversized holes, misalignment, or damaged polymer, potentially compromising the safety and function of your finished firearm. The MAS Defense bits are:
- Precisely Sized: M3 (3mm) and M4 (4mm) diameters match Polymer80 specifications exactly
- High-Speed Steel Construction: Durable material maintains sharpness through multiple uses
- Optimized Geometry: Designed to cut cleanly through polymer without grabbing or melting the material
- Compatible: Work with standard drill presses, hand drills, or drill jigs
Technical Specifications and Features
These drill bits feature a 135-degree split point design that reduces walking and provides better centering on your marked drill points. The high-speed steel (HSS) construction is heat-treated for maximum hardness and wear resistance, while the black oxide coating provides corrosion protection and reduces friction during cutting operations.
Complete Your Polymer80 Build with Confidence
Whether you're building your first Polymer80 frame or your tenth, having the right tools makes all the difference. These M3 and M4 drill bits are specifically sized for the pin holes in P80 frames, ensuring proper fitment of trigger housings, locking blocks, and other critical components. The clean, precise holes they create help ensure smooth assembly and reliable function of your finished firearm.
Why Buy from Texas Gun Store?
Q: Why should I purchase firearm tools and accessories from Texas Gun Store?
A: At Texas Gun Store, we combine extensive firearms expertise with a commitment to customer satisfaction. Our team includes experienced builders who understand exactly what tools work best for projects like Polymer80 builds. We carefully select products like these MAS Defense drill bits because we've tested them ourselves and know they deliver the precision and durability required for firearm applications. Plus, we offer competitive pricing, fast shipping, and knowledgeable support if you have questions about your build.
For all your firearm building needs, explore our selection of tools and accessories at Sources & methodology. Editorial review and rating by Sales Team based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.