Polymer80 P80-JIG-RL556v3 Jig Kit – 9mm

Product Overview

The Polymer80 P80-JIG-RL556v3 Jig Kit is an essential, cost-effective tool for the experienced firearms enthusiast undertaking a personal AR-15 platform build. This kit is designed specifically for completing a Polymer80 80% lower receiver, transforming it into a functional 9mm semi-automatic firearm frame. It is intended for skilled hobbyists who understand the machining process, legal responsibilities, and are seeking a budget-conscious solution for a single project. The primary use of this disposable jig is to precisely guide the milling and drilling operations required to finish an 80% lower, ensuring critical fire control group holes and the fire control cavity are machined to exact specifications for reliable operation.

Key Features

• Complete Disposable Jig System: A one-time-use fixture engineered for the Polymer80 9mm AR lower. It securely holds the 80% receiver and provides all necessary guide holes and milling templates, eliminating the need for complex measurement or setup.
• Included Essential Tooling: Comes with the specific drill bits and end mill required for completion: a 9mm end mill for the fire control cavity, and 3/8″, 5/16″, and 5/32″ drill bits for the selector, trigger, and hammer pin holes.
• Budget-Friendly Design: As one of the most affordable AR-15 80% lower jig options, it allows builders to allocate more of their budget toward quality internal components, barrels, or optics for their complete build.
• Precision Engineering for 9mm: Specifically configured for the dimensions and geometry of Polymer80’s 9mm lower receiver, ensuring compatibility and correct alignment for the semi-automatic fire control parts.
• Simplified Process: Reduces the complexity of finishing an 80% lower by providing a dedicated, step-by-step physical guide, making the machining process more accessible to those with basic workshop skills and tools.

Performance & Applications

This jig kit serves a focused purpose for the dedicated builder. Its primary application is for the completion of a single Polymer80 9mm AR-pattern lower receiver. A common use case is for a builder creating a dedicated pistol-caliber carbine (PCC) or AR-style pistol for recreational shooting and competition, where the 9mm caliber offers reduced recoil and lower ammunition cost. The disposable nature of the RL556v3 jig makes it an ideal choice for a one-off project where the builder does not anticipate needing a reusable jig system, maximizing value for that specific build.

Furthermore, it is perfectly suited for builders who already possess a workshop with a standard drill press or milling machine and simply require the guided fixture to ensure accuracy. By providing the correct tooling and guides, it helps achieve the tight tolerances necessary for a safe, reliable, and smooth-functioning final firearm, where the trigger group functions correctly and pins align properly.

About Polymer80

Polymer80 is a recognized leader in the firearms components industry, specializing in innovative polymer frame and receiver solutions. The company has built a reputation for engineering high-quality, durable 80% receivers that meet rigorous specifications. Their expertise in advanced polymer formulations and precision molding translates into products that are both lightweight and robust. The P80-JIG-RL556v3 Jig Kit is a reflection of their commitment to providing builders with not just the raw components, but also the dedicated tools needed to complete a project to a professional standard. Their focus on this niche market demonstrates a deep understanding of the builder community’s needs.

Why Buy From F1 Firearms AR-15

When sourcing components for a precision build, purchasing from a knowledgeable retailer is crucial. F1 Firearms AR-15, based in Spring, TX, is an industry-known manufacturer and retailer with direct expertise in the AR-15 platform. Their own F1 Firearms FDR-15 rifles are benchmarks for quality and innovation. This hands-on engineering and manufacturing experience means they understand the importance of component compatibility and precision. When you order the Polymer80 P80-JIG-RL556v3 from them, you are buying from a source that genuinely comprehends the product’s application within a build, ensuring you receive the correct kit for your 9mm Polymer80 project.

Make Your Decision

The Polymer80 P80-JIG-RL556v3 Jig Kit represents a straightforward, economical path to completing your 9mm AR lower build. It is a purpose-built tool for a specific task, offering value without sacrificing the necessary precision for a successful outcome. If you are an experienced individual undertaking a single 9mm build and prioritize diverting funds to other components, this jig kit is a logical and practical choice. Ensure you are familiar with all local, state, and federal regulations regarding 80% receivers, and possess the appropriate tools, skills, and safety knowledge before proceeding.

Warning: Handling firearms parts and accessories can expose you to lead and other substances known to cause health issues. Always practice proper safety and hygiene.