Description

Polymer80 P80-JIG-RL556v3 Jig Kit

Build your own precision lower receiver with confidence using the Polymer80 P80-JIG-RL556v3 Jig Kit. This essential tooling system is designed for the serious builder who demands accuracy and repeatability. Whether you are assembling a new AR-15 pattern platform or completing a custom project, the P80-JIG-RL556v3 Jig Kit provides the critical guide system necessary for a successful, professional-grade milled pocket. As a primary component in the build process, this jig kit ensures that every cut aligns with factory specifications, reducing the risk of material waste and misalignment.

Overview

The Polymer80 P80-JIG-RL556v3 Jig Kit is the latest iteration of Polymer80’s proven jig platform, engineered specifically for the RL556v3 receiver. This kit includes all necessary drilling and routing guides to complete the lower receiver pocket and trigger housing cuts. It is manufactured from high-impact polymer and precision-machined steel inserts, offering durability through multiple builds. The v3 design incorporates improved alignment pins and a streamlined clamping mechanism, making it a reliable choice for both first-time builders and experienced gunsmiths. Each component is precisely toleranced to work exclusively with the RL556v3 receiver, ensuring a tight fit and accurate cuts every time.

Features & Specs

• Precision-machined guide blocks for pocket routing, trigger pin holes, and safety selector detent channels
• Durable glass-filled nylon and hardened steel construction rated for repeated use across multiple builds
• Integrated alignment pins and leveling feet to maintain receiver stability during drilling and routing operations

The P80-JIG-RL556v3 Jig Kit is fully compatible with standard AR-15 lower parts kits and aftermarket triggers. The kit includes a drill bit set, end mill, and step-by-step printed instructions. All cutting surfaces are pre-lubricated for immediate use, and the jig body features indexed reference marks for quick setup. This kit does not require any specialized tools beyond a standard drill press or hand drill and a router. The v3 update also reduces the overall footprint, allowing for easier clamping in a vise or workbench.

Who It’s For

• DIY firearm builders seeking a reliable, repeatable jig system for the RL556v3 lower receiver
• Gunsmiths and armorers who need a durable production-grade jig for multiple builds or client work
• Enthusiasts upgrading from previous jig versions who want improved alignment and reduced play during machining

This kit is ideal for anyone with basic mechanical skills and access to common workshop tools. It is not intended for use with raw 80% blanks from other manufacturers, as the RL556v3 geometry is specific to Polymer80’s design. Builders should have experience with hand tools and be comfortable following detailed instructions. The jig is also suitable for educational environments where students learn receiver machining under supervision.

Shipping & FFL

The Polymer80 P80-JIG-RL556v3 Jig Kit is a firearm parts kit and does not contain a completed receiver or frame. As such, it does not require shipment to a Federal Firearms License (FFL) dealer. This item can be shipped directly to your residential or business address within the United States. However, customers are responsible for verifying that possession of this jig kit complies with all applicable federal, state, and local laws. Some states or municipalities may impose restrictions on the ownership or use of jigs designed for firearm receiver machining. By purchasing this item, you confirm that you are legally eligible to own and use this product in your jurisdiction. We recommend reviewing your local laws prior to ordering. This product is not a firearm and is not subject to NICS background check requirements, but we reserve the right to refuse shipment to jurisdictions where this product is prohibited.