Description
This Polymer80 PF940C & RL556V3 RHINO 80% Lower Combo Kit delivers two premium 80% receivers in one value-packed bundle. It’s for the builder who wants to tackle both a compact Glock-style pistol and a modern AR-15 platform rifle project without sourcing parts separately. Since we started stocking this combo in spring 2025, it’s become a steady seller, with a clear spike in weekend orders from enthusiasts heading to the range.
Stand-Out Features
- Dual-Platform Value: Complete your PF940C (Glock 19/23/32 compatible) and RL556V3 (AR-15) builds from one purchase.
- Enhanced Polymer80 Engineering: The PF940C features reinforced polymer with integral metal rails for durability. The RL556V3 “Rhino” lower has a unique, aggressive texturing and flared magwell for positive handling.
- Jig-Included Simplicity: Both receivers come with their proprietary, reusable Polymer80 jigs. These jigs are precision-machined to guide your drill and milling work accurately.
- No FFL Required*: These are 80% unfinished receivers. They are not firearms under federal law, so they ship directly to you. (*Check your state and local laws.)
- Build-Ready Design: The RL556V3 is compatible with standard AR-15 parts kits and accepts multi-caliber uppers. The PF940C is designed for compact slide assemblies.
Technical Data
| Kit Contents | 1x PF940C 80% Lower, 1x RL556V3 80% Lower, 2x Jigs, Required Drill Bits |
| PF940C Compatibility | Glock 19/23/32 Gen 3 Parts |
| RL556V3 Compatibility | Multi-Caliber AR-15 Upper Receivers |
| RL556V3 Fire Control Pocket | Mil-Spec Dimensions |
| RL556V3 Magazine Well | Flared Design |
| Weight (measured) | 5.1 oz |
| Frame Material | High-Strength Polymer Composite |
| Finish | Molded Black Polymer |
Your Questions Answered
What tools do I need to finish these 80% lowers?
You will need a hand drill or drill press, a router or Dremel tool with a milling bit, and basic workshop safety equipment (vise, eye protection). The included jigs and drill bits provide the necessary guides to complete the fire control pockets and pin holes.
Is the RL556V3 lower compatible with all AR-15 parts kits?
Yes. The RL556V3 “Rhino” lower uses a standard mil-spec fire control group pocket and accepts standard AR-15 lower parts kits, pistol grips, and buffer tubes. It will pair with any mil-spec AR-15 upper receiver.
Why do you sell more of these on weekends?
Our sales data shows a consistent weekend uptick. We attribute this to builders planning their projects after a range session, discussing builds with friends, or dedicating weekend workshop time to their next custom firearm.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
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