Polymer80 RL556V3 – Rhino 80% AR15 Lower Receiver And RL556V3 Jig Kit Bundle

This bundle combines the Polymer80 RL556V3 – Rhino 80% AR15 lower receiver with the matching RL556V3 jig kit, delivering a complete foundation for building your own AR15. As a non-serialized 80% lower, this component requires final machining by the end user. The jig kit provides the precise tooling needed to complete the lower receiver to ATF compliance standards. This is a practical, cost-effective starting point for builders who want full control over their firearm assembly process.

Overview

The polymer80 rl556v3 – rhino 80% ar15 lower receiver and rl556v3 jig kit bundle is designed for DIY firearm enthusiasts. The RL556V3 Rhino lower receiver features reinforced polymer construction with a full-length Picatinny rail on the magazine well, offering a solid mounting surface for grip accessories. The included jig kit eliminates guesswork, providing drill bits, end mills, and alignment guides specific to this lower. This bundle streamlines the build process, reducing the need for separate tool purchases.

Features & Specs

The RL556V3 lower receiver is manufactured by Polymer80, a trusted name in the 80% receiver market. It accepts standard AR15 upper receivers, trigger groups, and buffer tubes. The jig kit is CNC-machined from billet aluminum for repeatable accuracy during the finishing process.

• 80% lower receiver requires final machining (trigger pocket, safety selector, and buffer tube threads)
• Reinforced polymer frame with integral trigger guard and flared magazine well
• Compatible with mil-spec AR15 LPK, buffer tube assemblies, and upper receivers

• Jig kit includes hardened steel drill bushings and adjustable alignment blocks
• Complete kit: 3 drill bits, 2 end mills, and a 5/16-32 tap for buffer tube threading
• Color-coded instructions guide users through each machining step

• Weight: 12.8 oz (lower receiver only)
• Material: Impact-modified polymer with stainless steel trigger pin inserts
• Finish: Textured grip surface with integrated storage compartment in grip

Who It’s For

This bundle suits experienced builders who want a reliable, non-serialized AR15 platform without paying for a complete rifle. It is ideal for hobbyists who own basic shop tools (drill press, vise, calipers) and want a project that requires moderate mechanical skill. The polymer80 rl556v3 – rhino 80% ar15 lower receiver and rl556v3 jig kit bundle is not intended for first-time builders unless they have prior experience with firearm assembly. Users must be legally eligible to possess firearms and must complete the lower receiver themselves—no one else may finish it for you.

Shipping & FFL

This bundle ships directly to your residential or business address. Because the lower receiver is an 80% blank (non-firearm per ATF classification), no Federal Firearms License (FFL) transfer is required for shipment. However, once you complete the machining, the finished lower receiver becomes a firearm and must be transferred through an FFL dealer if you sell it. You are responsible for verifying local, state, and federal laws before purchasing. By completing this transaction, you confirm that you are legally allowed to possess firearm components and will finish the receiver in compliance with all applicable regulations.