Polymer80 P80-JIG-RL556v3 Jig Kit

If you are building an AR-15 from an 80 percent lower, the tooling you choose makes or breaks the experience. The Polymer80 P80-JIG-RL556v3 Jig Kit is the dedicated jig set designed to work with Polymer80’s RL556v3 receiver. It gives you the precision alignment and stable platform needed to complete your lower without guesswork. Whether you are a first-time builder or a seasoned hobbyist, this jig kit simplifies the milling and drilling process so you can focus on the build, not the fiddling.

Overview

This jig kit is purpose-built for the Polymer80 RL556v3 80 percent lower receiver. It includes the hardened steel drill bushings, alignment pins, and the clamshell-style jig body that holds your receiver securely during machining. The kit does not include the lower receiver or tooling bits, but it gives you the essential fixturing to complete the fire control pocket, pin holes, and trigger channel. The design is compact, reusable, and engineered to keep your bit paths straight and your receiver undamaged. For anyone building a Polymer80 RL556v3, this is the jig you want in your vise.

Features and Specs

The Polymer80 P80-JIG-RL556v3 jig kit is built around repeatable accuracy. The jig body clamps around the receiver with no slop, and the drill bushings are case-hardened to resist wear from multiple builds. Here are the key specifications and features you can expect:

• Precision-machined clamshell jig body with full-length alignment for the RL556v3 receiver
• Includes hardened steel drill bushings for trigger pin, hammer pin, and safety selector holes
• Integrated indexing pins and locating slots for consistent pocket depth and position

This kit is compatible with standard drill presses, hand drills, and routers. It does not require any modification to the lower receiver beyond what the jig guides you through. The bushings are replaceable, and the jig body is designed for repeated use across multiple builds. Every component is made in the USA under Polymer80’s quality standards.

• Manufacturer: Polymer80
• Category: Build Kits
• Compatible with: Polymer80 RL556v3 80% lower receiver

Who It Is For

This jig kit is for anyone who wants to complete a Polymer80 RL556v3 lower at home with confidence. It is ideal for builders who are tired of improvised setups, misaligned holes, or jigs that flex under pressure. If you have a vise, a drill, and a few hours, this kit gives you the guided approach to mill the trigger pocket and drill the pin holes correctly the first time. It suits the hands-on builder who values repeatability and clean results, whether you are assembling your first rifle or your tenth. The jig is also a solid choice for small shops, gunsmiths, or clubs that help others complete their builds, since the bushings hold up to frequent use.

• Home builders completing their first Polymer80 RL556v3 lower
• Experienced hobbyists who want a dedicated jig for repeat builds
• Small gun shops or builders who assist others with 80 percent lowers

Shipping and FFL

This Polymer80 P80-JIG-RL556v3 jig kit is a tooling and fixturing product. It does not contain a firearm, a firearm receiver, or any component regulated as a firearm frame. As such, it ships directly to your door with no FFL transfer required. No background check is needed, and no shipping to a licensed dealer is necessary. Standard shipping rates and lead times apply. Please check your local and state laws regarding the possession and completion of 80 percent lower receivers before purchasing. Polymer80 jig kits are intended for lawful use in accordance with all applicable federal, state, and local regulations.