Complete Your AR Build with the MAS Defense 80% Lower Jig Kit
Take control of your firearm manufacturing with the MAS Defense 80% Lower Jig Kit, designed specifically for finishing AR-15 and AR-9 lower receivers. This comprehensive kit provides everything you need to transform an 80% lower into a fully functional receiver with professional-grade precision. Whether you’re a seasoned gunsmith or a first-time builder, this jig system offers the reliability and accuracy required for successful completion.
Why Choose This 80% Lower Jig?
Building your own AR platform firearm is a rewarding experience that offers customization and compliance benefits. The MAS Defense jig stands out with its robust construction and user-friendly design. Made from high-strength materials, it ensures consistent alignment and minimizes tool wear during the milling process. This kit is compatible with both AR-15 and AR-9 platforms, making it a versatile addition to any workshop.
Key Features and Benefits
- Dual-Platform Compatibility: Works seamlessly with AR-15 and AR-9 80% lower receivers, offering flexibility for various builds.
- Complete Tool Inclusion: Comes with all necessary drill bits, end mills, and hardware, eliminating the need for additional purchases.
- Precision Engineering: Features precisely machined guide holes and bushings to ensure accurate drilling and milling operations.
- Durable Construction: Built from hardened steel and aluminum components to withstand repeated use without degradation.
- Easy-to-Follow Instructions: Includes clear guidelines for setup and operation, suitable for beginners and experts alike.
Technical Specifications
The MAS Defense jig is engineered for reliability. It accommodates standard 80% lowers with mil-spec dimensions, ensuring compatibility with most aftermarket parts. The included cutting tools are made from high-speed steel, providing clean cuts and extended lifespan. The jig’s design minimizes chatter and vibration, resulting in smoother finishes and tighter tolerances.
How It Works
Using this jig is straightforward: secure your 80% lower receiver in the fixture, follow the step-by-step drilling and milling sequence, and achieve a professionally finished lower. The process typically requires a drill press or milling machine, basic workshop tools, and safety equipment. Always adhere to local laws and regulations regarding firearm manufacturing.
Why Buy from Texas Gun Store?
At Texas Gun Store, we are committed to providing quality products and exceptional service. Our team includes experienced firearms enthusiasts who test and verify the equipment we sell. We offer fast shipping, secure checkout, and dedicated customer support to ensure your satisfaction. Shop with confidence knowing you’re dealing with a trusted source for all your firearm needs.
FAQ: Why Buy from Us?
- Expertise: Our staff has hands-on experience with the products we sell, offering reliable advice and support.
- Quality Assurance: We carefully select items like the MAS Defense jig for their durability and performance.
- Customer-First Approach: We prioritize your needs with responsive service and hassle-free returns.
- Secure Transactions: Your personal and payment information is protected with industry-standard security measures.
- Community Trust: As a reputable Texas-based retailer, we build long-term relationships with our customers.
Enhance your gunsmithing capabilities with the MAS Defense 80% Lower Jig Kit. Order today from Texas Gun Store and start your next build with confidence!
| Compatibility | AR-15 and AR-9 80% Lower Receivers |
| Material | Hardened Steel and Aluminum |
| Included Tools | Drill Bits, End Mills, Hardware Kit |
| Weight | Approx. 5 lbs |
| Dimensions | Varies by setup; compact for workshop use |
| Required Equipment | Drill Press or Milling Machine |
| Manufacturer | MAS Defense |
| Warranty | Typically 1-year limited warranty |





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