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 create clean, accurate pin holes for your P80 lower receiver. These bits are manufactured from high-speed steel with a titanium nitride coating for durability and smooth cutting performance.
Why These Drill Bits Are Essential for Polymer80 Builds
Polymer80 frames require specific hole sizes for proper pin fitment. The M3 bit (3mm) is typically used for the trigger and slide stop pins, while the M4 bit (4mm) handles the larger locking block pin. Using standard drill bits can result in oversized holes, loose pins, and compromised firearm function. Our MAS Defense bits are precisely sized to match Polymer80’s specifications.
Key Features and Benefits
- Precision Sizing: Exactly 3mm and 4mm diameters for perfect Polymer80 pin fitment
- Titanium Nitride Coating: Reduces friction and extends bit life
- 135° Split Point Design: Self-centering tip prevents walking on curved surfaces
- High-Speed Steel Construction: Maintains sharpness through multiple uses
- Comprehensive Set: Includes both M3 and M4 bits for complete P80 frame drilling
Professional Results for DIY Builders
Whether you’re a first-time builder or experienced gunsmith, these drill bits deliver professional results. The included sizes cover all pin holes required for most Polymer80 frame models. For other firearm tools and accessories, visit our Miami Shooters Supply store.
Why Buy From Miami Shooters Supply?
Q: Why should I purchase from Miami Shooters Supply?
A: We combine competitive pricing with expert knowledge. Our team tests products in real-world scenarios, ensuring we only stock items that meet our performance standards. We provide detailed product information and support to help you make informed decisions for your firearm builds.
Proper Usage Instructions
For best results when drilling your Polymer80 frame:
- Secure the frame in a vise with protective jaws
- Use a drill press or hand drill at medium speed (800-1200 RPM)
- Apply steady, moderate pressure – let the bit do the cutting
- Use cutting fluid or lubricant for smoother operation
- Clear chips frequently to prevent binding
These bits are designed specifically for polymer materials and should not be used on metals or other hard materials.
| Bit Sizes | M3 (3mm) and M4 (4mm) |
| Material | High-Speed Steel with Titanium Nitride Coating |
| Point Angle | 135° Split Point |
| Shank Type | Round Straight Shank |
| Application | Polymer80 Frame Drilling |
| Compatibility | Most Polymer80 Lower Receiver Models |
| Package Contents | 1x M3 Drill Bit, 1x M4 Drill Bit |
Frequently Asked Questions About This Product
Why buy MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: Firearms, New Arrivals, New Releases.
What tags or features does this product have?
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Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds
All firearms, including the MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the MAS Defense M3/M4 Drill Bits for Polymer80 Frames - Precision Tooling for P80 Builds is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
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