Polymer80 RL556V3 – RHINO 80% AR15 Lower Receiver ONLY

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$64.99

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SKU: P80-BK556v3-GRY
Brand:

Description

The most popular polymer AR-15 80% lower.

Worried about cutting and drilling a metal 80% lower? Try this instead! The “RHINO” 80% lower is made from a glass-reinforced nylon composite, the same material used to make handgun frames. It’s incredibly tough and capable of handling centerfire rifle cartridges, but it’s a breeze to cut and drill for beginner builders with basic tools.

The RL556v3 features some improvements over its prior models: A threadless pistol grip reduces stress points within the receiver, and the buffer tube housing has been beefed up. It also features a flared magazine well for quicker reloads.

NOTE: This lower does not include an 80% jig. The RL556v3 Jig is available here. This lower also works with other AR-type 80% lower jigs.

“RHINO” Polymer 80% Lower: What’s Included

  • 80% Polymer AR15 Lower Blank (Mil-spec)
  • Hex Key
  • Set Screw 
  • Grip Nut
  • Grip Screw
  • Bolt Catch Pin

“RHINO” Polymer 80% Lower Features

 


Frequently Asked Questions about Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY

What does the Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY include?
The Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY comes complete with essential parts as described: The most popular polymer AR-15 80% lower. Worried about cutting and drilling a metal 80% lower? Try this instead! The "RHINO" 80% lower is made from a glass-reinforced nylon composite, the same material used to make handgun frames. It's incredibly tough and capable of handling centerfire rifle cartridges, but it's a breeze to cut and drill for beginner builders with basic tools. The RL556v3 features some improvements over its prior models: A threadless pistol grip reduces stress points within the receiver, and the buffer tube housing has been beefed up. It also features a flared magazine well for quicker reloads. NOTE: This lower does not include an 80% jig. The RL556v3 Jig is available here. This lower also works with other AR-type 80% lower jigs. "RHINO" Polymer 80% Lower: What's Included 80% Polymer AR15 Lower Blank (Mil-spec) Hex Key Set Screw  Grip Nut Grip Screw Bolt Catch Pin "RHINO" Polymer 80% Lower Features Works with standard, mil-spec lower parts kits Compatible with mil-spec buffer tube assemblies Uses standard pivot and takedown pins Works with standard AR uppers Accepts mil-spec magazines 100% made in the USA  
Do I need an FFL to purchase Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY?
No. This product is a part or accessory and does not require an FFL for purchase or shipping.
Is Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY legal in my state?
While Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY is legal in most states, always verify your local laws before placing an order. We comply with all state regulations.
Do Glock mags work with Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY?
In most cases, yes — Glock-compatible frames are designed to accept Glock OEM and compatible magazines. Always confirm fitment in the product details.
Can I conceal carry Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY once built?
That depends on your state’s concealed carry laws. Once properly serialized and registered, carrying may be allowed under state law.
How long does it take to receive Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY?
We ship all over the USA within 1–3 business days. You will receive tracking once shipped. Delivery times vary by carrier and region.
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