The Polymer80 LR-308 80% Lower Receiver comes complete with essential parts as described: Polymer80 LR-308 80% Lower Receiver The Polymer80 LR-308 80% lower receiver represents a pragmatic starting point for builders seeking a large-frame AR platform. Designed for the AR-10/ LR-308 pattern, this receiver provides the foundation for a .308 Winchester or 6.5 Creedmoor build without the need for a serialized transfer through a Federal Firearms License (FFL) until machining is complete. As an 80% receiver, it requires final milling of the fire control pocket and trigger pin holes to become functional. This component is machined from reinforced polymer, offering weight savings over aluminum alternatives while maintaining structural integrity under standard pressures. Overview The polymer80 lr-308 80% lower receiver is engineered for the builder who values control over their firearm's configuration. It is compatible with DPMS-pattern high-profile upper receivers and accepts standard LR-308 rifle parts kits. The receiver is shipped as an unfinished block, legally defined as a non-firearm until material is removed to accommodate the trigger group. This allows direct shipment to your door without the paperwork and transfer fees associated with completed receivers. The polymer construction reduces overall rifle weight by approximately 12 ounces compared to billet aluminum receivers, a meaningful difference for a large-frame platform. Features & Specs Reinforced polymer construction with integral trigger guard and flared magazine well for faster reloads Compatible with DPMS-pattern LR-308 upper receivers, buffer tubes, and standard AR-10 parts kits Pre-indexed jig alignment holes and clearly marked reference points for accurate milling with a standard router or drill press This receiver uses a high-impact nylon polymer blend that resists cracking and deformation under recoil. The fire control cavity is pre-formed to within 0.020 inches of final dimensions, reducing machining time compared to raw billet blanks. All pin holes are dimpled for drill bit location. The receiver is compatible with both standard and enlarged trigger guards and accepts most drop-in trigger units designed for the LR-308 platform. Overall length is 9.5 inches with a weight of 7.2 ounces before machining. Who It's For The polymer80 lr-308 80% lower receiver is intended for experienced firearm builders who have access to basic machining tools and understand the legal requirements for completing an 80% receiver. This product is not for first-time builders or those unfamiliar with milling jigs and end mills. It suits shooters who want a lightweight .308 battle rifle or precision platform and prefer to assemble their own lower receiver to avoid dealer fees and background check delays. It is also appropriate for those who wish to maintain a greater degree of privacy regarding firearm ownership by completing the receiver themselves in compliance with applicable federal and state laws. Builders with at least one completed AR-15 or LR-308 build who understand receiver jig operation Shooters seeking a sub-8-pound large-frame rifle for hunting or long-range target use Individuals residing in states where 80% receivers are legal and who have the required tooling (router, drill press, or hand-held milling tool) Not for those without a stable workbench, clamp system, and appropriate cutting tools Not for builders who prefer drop-in assembly without machining steps Not recommended for use with aftermarket full-auto trigger packs or modified fire control groups Shipping & FFL This polymer80 lr-308 80% lower receiver ships directly to your residence or business address with no FFL transfer required. Because it is classified as a non-firearm under federal law until machined, no background check, shipping to a dealer, or waiting period applies. However, the purchaser is solely responsible for complying with all state and local laws regarding the ownership and completion of 80% receivers. Some states, including but not limited to California, New York, New Jersey, Connecticut, Washington, and Illinois, may restrict or prohibit the purchase or possession of unfinished receivers. By placing an order, you certify that you are legally permitted to own and complete this component in your jurisdiction. You must be at least 21 years of age to purchase. Once machined, the completed lower receiver must comply with all applicable federal regulations, including serialization if required by state law or if the receiver is later transferred to another party.

No. This product is a part or accessory and does not require an FFL for purchase or shipping.

While Polymer80 LR-308 80% Lower Receiver is legal in most states, always verify your local laws before placing an order. We comply with all state regulations.

In most cases, yes — Glock-compatible frames are designed to accept Glock OEM and compatible magazines. Always confirm fitment in the product details.

That depends on your state’s concealed carry laws. Once properly serialized and registered, carrying may be allowed under state law.

We ship all over the USA within 1–3 business days. You will receive tracking once shipped. Delivery times vary by carrier and region.