Polymer80 P80-JIG-RL556v3 Jig Kit

The Polymer80 P80-JIG-RL556v3 Jig Kit is a precision-engineered tooling system designed for builders who demand exacting tolerances and repeatable results when completing a Polymer80 RL556v3 receiver. This jig kit serves as the critical template for milling and drilling operations, providing the structural guide necessary to transform a raw 80% lower into a functional receiver. Every component in this kit is manufactured to Polymer80’s established specifications, ensuring compatible interface with the RL556v3 platform.

Overview

The Polymer80 P80-JIG-RL556v3 Jig Kit represents the third revision of Polymer80’s dedicated jig system for their RL556 receiver line. This kit includes all necessary alignment blocks, drill bushings, and locating pins required for proper receiver completion. The jig body is constructed from impact-resistant polymer with hardened steel drill guides positioned at critical pin locations. When paired with the corresponding RL556v3 receiver, this jig kit eliminates guesswork by providing fixed reference points for the trigger pocket, fire control group pin holes, and safety selector channel.

Features & Specs

The Polymer80 P80-JIG-RL556v3 Jig Kit incorporates design improvements over earlier iterations, including enhanced chip evacuation channels and reinforced bushing retention. The kit facilitates precise material removal through clearly indexed routing windows and hardened steel drill bushings rated for repeated use. Key specifications include:

• Dedicated jig for RL556v3 80% receiver completion; includes three-axis alignment blocks for consistent pocket depth and lateral positioning
• Hardened steel drill bushings for fire control group pin holes, trigger pin, and hammer pin locations; bushings are press-fit and replaceable
• Integrated chip evacuation channels and clear indexing marks for router depth control; jig accepts standard 1/4-inch router bits

Additional features include a full-length locating pin system that secures the receiver within the jig body, preventing lateral shift during milling operations. The kit also includes a drill bit sizing guide and step-by-step reference markings for the safety selector channel. All components are machined to within 0.002-inch positional tolerance relative to the receiver datum points.

Who It’s For

This Polymer80 P80-JIG-RL556v3 Jig Kit is intended for experienced builders who possess the necessary tools—specifically a router and drill press—and understand the mechanical requirements of completing an 80% lower receiver. The kit is designed for individuals who have prior experience with firearm component assembly and are comfortable using power tools for precision material removal. It is suitable for those building a single RL556v3 receiver or for gunsmiths who require a durable, repeatable jig system for multiple builds. The kit does not include the receiver, router, or drill press; these must be sourced separately.

Shipping & FFL

The Polymer80 P80-JIG-RL556v3 Jig Kit is classified as a tool and does not contain any firearm receiver components. As such, this item does not require shipment to a Federal Firearms License (FFL) dealer. It ships directly to residential addresses within the United States where local laws permit possession of 80% receiver tooling. Buyers are solely responsible for understanding and complying with all applicable federal, state, and local laws regarding the completion of 80% receivers. Polymer80 jigs are designed for use with Polymer80-manufactured receivers only; use with non-Polymer80 receivers may result in improper fitment.

• No FFL transfer required for this jig kit; ships directly to your provided address
• Check your state and local regulations regarding 80% receiver possession and completion before ordering
• This jig kit is not a firearm and does not contain any serialized components

Federal law requires that any receiver completed using this jig must be made for personal use only and may not be transferred or sold without proper serialization and licensing. The purchaser assumes full liability for compliance with all applicable laws.