Description

Polymer80 P80-Jig-RL556v3 Jig Kit

The Polymer80 P80-Jig-RL556v3 Jig Kit is a precision-machined tooling system designed for builders who demand accuracy and repeatability when completing a Polymer80 RL556v3 lower receiver. This jig kit replaces the need for multiple specialized fixtures, consolidating the drilling, milling, and trigger pocket work into a single guided platform. Whether you are a first-time builder or an experienced gunsmith, this jig delivers the dimensional control required to produce a functional, reliable firearm frame.

Overview

Polymer80 engineered the P80-JIG-RL556v3 Jig Kit to streamline the build process for the RL556v3 receiver. The kit includes hardened steel drill bushings, a rigid polymer jig body, and all necessary locating pins. The jig clamps directly onto the receiver, providing fixed reference points for every machining step. By using this jig, you eliminate guesswork and reduce the risk of misaligned holes or uneven pocket depths. The kit is sold as a standalone tool, allowing you to reuse it for multiple builds with the same receiver type.

Features & Specs

• Precision-machined hardened steel bushings for trigger pin and hammer pin holes, rated for extended use without wear deformation
• Integrated milling guide for the trigger pocket, with indexed depth stops to prevent over-cut
• Quick-clamp design that secures the receiver without marring the polymer surface

The jig kit is manufactured from glass-filled nylon and includes stainless steel locating pins. It is compatible exclusively with the Polymer80 RL556v3 lower receiver. Dimensions are optimized for standard AR-15 LPK components. The kit does not include drill bits, end mills, or receiver; those are sold separately. Weight is approximately 1.2 pounds, and the jig measures 8.5 inches by 3 inches by 2 inches when assembled.

Who It’s For

This jig kit is intended for the firearm builder who values precision over convenience. If you are assembling a Polymer80 RL556v3 receiver and want to ensure your trigger group functions without binding, the P80-JIG-RL556v3 Jig Kit provides the necessary alignment. It suits DIY enthusiasts who own a drill press or hand drill with steady hands, as well as professional gunsmiths who require repeatable results across multiple builds. The kit is not for those seeking a quick no-tools solution; it requires basic mechanical aptitude and the ability to follow dimensional instructions. If you have previously completed a Polymer80 compact or full-size jig kit, the RL556v3 jig follows a similar guided process but with larger tolerances suited to the AR-15 platform.

Shipping & FFL

The Polymer80 P80-JIG-RL556v3 Jig Kit is classified as a firearm tool, not a receiver or firearm frame. As such, it ships directly to your residential or business address without requiring an FFL transfer. No background check is needed for purchase. However, federal law requires that any completed firearm receiver manufactured from this jig must comply with all applicable laws in your jurisdiction. It is your responsibility to verify that your intended build is legal in your state and locality. This product is sold as a tool only; Polymer80 assumes no liability for misuse or noncompliance with local regulations.