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20 of 20 Items
20 of 20 Items


Polymer80 specializes in manufacturing 80% pistol and rifle frames and components for do-it-yourself firearm enthusiasts. The term "80%" refers to a partially completed firearm receiver or frame that requires additional machining or assembly by the end-user to make it functional.

POLYMER 80 Frames & Receivers

Polymer80 frames & lowers are made from polymer materials, such as reinforced nylon or polymer blends, which offer durability and weight savings compared to traditional metal frames.

Polymer 80% lowers and frames are the best way to build a factory-spec handgun or polymer AR-15 at home. These receiver and frame blanks are lightweight but tough, and 100% compatible with their weapon platform's retail parts. That makes customization affordable and easy.

Completing each frame or receiver requires drilling a few holes and removing excess polymer material using the included bits. These steps can be completed with basic hand tools (all you need is a vise, a Dremel, and some files). Little to no experience is required, thanks to easy-to-follow instructions! Once completed, simply pair your pistol frame with the appropriate Gen 3 Glock® barrel, slide, and parts kits, and hit the range in a single day.

Pistol Kit Features & Specs

  • Can be fabricated with simple hand tools
  • Compatible with all Gen 3 Glock® parts
  • Constructed of high-strength polymer
  • Stainless-steel Locking Block Rail System (LBRS)
  • Stainless-steel Drop-in Rear Rail Module (RRM)
  • Includes blank serialization plate


We're also excited to introduce polymer 80% lower receiver options for the AR-15 (5.56/.223) and .308 (DPMS Gen 1, LR-308)! If you've been wanted to shed weight and build the lightest AR-15 or .308 rifle possible, you've in the right place.

These polymer lowers weigh just 0.3 pounds. Once assembled, they reduce weight by around 50% compared to traditional aluminum receivers! Our friends over at Polymer80 took the time to ensure these lowers are capable of handling high-powered rifle rounds. Many customers have already built their black rifle or pistol using polymer, to great effect.

Polymer80 Features and Specs:

  • Works with all mil-spec AR-15 parts
  • Easier to machine than an aluminum receiver
  • .308 lowers compatible with DPMS LR-308 platform
  • Made of high-strength, reinforced polymer

Polymer 80: Serialization & State Restrictions

Some states require serialization of your P80 frame or receiver before fabrication. Other states have banned 80% frames or receivers, certain firearm parts, and other products we sell. Check your local and state laws, and please confirm whether we can ship to your state before ordering.

See our Shipping Restrictions Here


DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Gun Builders Depot, a/k/a nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit


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.