Buy 80 Percent Lowers Online: Your Gateway to Custom Firearms
Unlock Your Customization Potential
At [Your Brand Name], we offer a selection of 80 percent lowers that empower you to build your own firearms tailored to your specifications. Whether you’re an experienced gunsmith or a hobbyist, our 80 percent lowers provide the perfect foundation for your next project.

What is an 80 Percent Lower?
An 80 percent lower receiver is a partially finished firearm component that requires additional machining to be operational. Legally, it is not classified as a firearm, meaning you can purchase it with fewer restrictions.

Why Choose Us for Your 80 Percent Lowers?
High-Quality Materials
Our lowers are crafted from premium mil-spec aluminum and stainless steel. With superior durability and finish, our products are designed for longevity and performance.

Precision Engineering
We believe in delivering precision-engineered products. Each lower is manufactured to stringent specifications, allowing for seamless compatibility with standard components.

Wide Range of Options
Choose from a variety of styles and calibers. Whether you prefer AR-15 or AR-10, we have the right 80 percent lower to fulfill your firearms project.

Customer Satisfaction Guaranteed
24/7 Customer Support
Our knowledgeable support team is here to assist you with any questions, from product details to custom builds.

Fast Shipping
Enjoy quick shipping times with discreet packaging. We ensure that your order arrives safely and promptly.

Authenticity and Quality
We stand behind our products with an authenticity guarantee, providing peace of mind with each purchase.

How to Buy 80 Percent Lowers Online
Browse Our Selection: Explore our extensive inventory of 80 percent lowers.
Add to Cart: Select your desired model and add it to your cart.
Secure Checkout: Enjoy a secure and simple checkout experience.
Get Started on Your Build: Once your order arrives, you’re ready to start assembling your custom firearm!
Legal Considerations
Before purchasing an 80 percent lower, please ensure compliance with your local laws and regulations regarding firearm construction and ownership.

Frequently Asked Questions
Do I need a background check to buy 80 percent lowers?
No, since they are not considered firearms until completed, they typically do not require a background check.

What tools will I need to finish my lower?
Completing a lower requires standard machining tools and kits, which we recommend consulting for detailed instructions.

Customer Reviews
“Fantastic quality and service! I built my first AR-15 from their 80 percent lower, and it exceeded my expectations.” – John D.

Showing 1–20 of 35 results

.308 80% Lower and LR-308/AR-10 Lower Parts Kit (w/ Hammer and Trigger)

$149.99

The .308 80% Lower + LR-308/AR-10 Lower Parts Kit (with Hammer & Trigger) is the complete starting point for your no-FFL, unserialized .308/6.5 Creedmoor battle rifle build. Precision-machined 6061-T6 billet or 7075-T6 forged 80% lower paired with a premium mil-spec LR-308 lower parts kit featuring enhanced polished trigger group (3.5–4.5 lb pull), anti-walk pins, and everything needed to finish the fire-control pocket. No serialization, no paperwork – ships directly to your door (21+). Perfect for DPMS Gen 1 pattern rifles, precision DMRs, or heavy-hitting carbines. In stock and ready to ship from Polymer80USA.com – build your dream big-bore ghost gun today.

308 80% Lower – Billet

$126.98

 Premium Polymer80 .308 80% Billet Lower Receiver  7075-T6 billet aluminum, DPMS Gen 1 compatible, flared magwell, reinforced buffer tower for AR-10 builds. Unfinished – mill with Easy Jig. In stock & ships today!

5/16″ High Speed End Mill for Easy Jig® Gen 2

$39.99
Shop 5/16" solid carbide high speed end mill with 1/4" shank for Easy Jig Gen 2. Precision milling tool for fast, clean 80% AR lower finishing.

80% .308 Easy Jig® Gen 1

$239.99
Finish 80% .308 AR lowers easily with patented Gen 1 Easy Jig. Durable, precise CNC aluminum jig with depth gauge for safe at-home milling.

80% AR-15 Easy Jig® Gen 1

$149.99
Finish 80% AR-15 lowers easily with the Easy Jig® Gen 1. Router-based, built-in depth gauge, durable CNC aluminum for accurate milling at home.

80% Lower Fire/Safe Marked – Anodized Black

$54.00

Polymer80 AR-15 80% Lower Fire/Safe Marked – Anodised Black Forged 7075-T6 aluminium, mil-spec compatible, deep engraved markings. Unfinished for DIY milling. In stock – ships today from Polymer80 USA!

80% Lower Fire/Safe Marked – Raw

$42.99

Polymer80 AR-15 80% Lower Fire/Safe Marked – Raw Forged 7075-T6, deep-engraved FIRE/SAFE, broached magwell, ready for Cerakote or anodising. Unfinished – mill today, ship today!

80% Lower Patriot Pack

$222.99

Polymer80 Patriot Pack – AR-15 80% Lower + Easy Jig Gen 3 + Premium Drill Bits & End Mill. Everything you need to finish your build legally. In stock—ships today!

AR9 80% Lower Fire/Safe Marked – 9mm – Billet

$84.99

Polymer80 AR9 80% Billet Lower Fire/Safe Marked – 9mm 7075-T6 billet, Glock mag compatible, deep engraved markings, flared magwell. Unfinished & ready to mill. In stock—ships today!

Billet 80% Lower (Raw)

$79.99

The Billet 80% Lower (Raw) is the premium foundation for your next AR-15 or AR-308 ghost gun build. CNC-machined from solid 6061-T6 aluminum billet (not forged or cast), this raw, unfinished receiver delivers tighter tolerances, smoother surfaces, and a cleaner look than forged 80% lowers. Features broached magwell, integrated trigger guard, and threaded bolt-catch pin hole – everything you need for a hassle-free completion with basic tools. No FFL, no serialization, no paperwork. Ships directly to your door (21+). Perfect for builders who want the best starting point for a custom rifle, pistol, or lightweight build. In stock and ready to ship from Polymer80USA.com – start your dream AR today.

Blemished – 80% Lower Fire/Safe Marked – Anodized Black

$49.99

Blemished Polymer80 AR-15 80% Lower Fire/Safe Marked – Anodised Black  Minor cosmetic blemishes only – full function, deep engravings, forged 7075-T6. Save big – in stock, ships today!

Easy Jig® + (1) .308 80% Lower

$619.96
Accurately finish your own DPMS .308 lower with the Easy Jig® + (1) .308 80% Lower kit. Durable polymer blank & precision jig for easy AR-10 builds.

Easy Jig® + (1) 80% Lower

$579.96
The Easy Jig® + (1) 80% Lower kit from Polymer80USA delivers a user-friendly, all-in-one solution for completing your own polymer 80% firearm lower receiver with precision and confidence. Featuring a patented jig and a lightweight polymer blank, this kit is perfect for hobbyists wanting high-quality, customizable firearm builds that are easy to finish and legally compliant.

Easy Jig® + (3) .308 80% Lowers

$879.94
Build 3 DPMS .308/AR-10 lowers easily with Easy Jig® + (3) 80% Lowers kit. Precision jig, durable polymer blanks, fast milling for custom rifle projects.