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Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver ONLY, Grey

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There's nothing wrong with going with the classic aluminum 80% AR15 lower receiver, but there is not denying the appeal of a polymer lower that can be just as durable and at such a lower cost. In which case, we bring you the Polymer80 RL556V3, a grey 80% AR15 lower receiver that is created from a polymer construct with solid core design that will ensure a durable and lightweight lower once completed. It also features a flared magwell that allows for quick and easy reloads, as well as a hefty mil-spec buffer tube housing.


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

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Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

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We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.