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.
Easy Jig® + (3) .308 80% Lowers
The Easy Jig® + (3) .308 80% Lowers kit from Polymer80USA is a comprehensive bundle designed for efficient completion of multiple DPMS Gen 1 pattern .308/AR-10 lower receivers. This value-packed kit includes the patented Easy Jig® system and three high-strength polymer 80% lower blanks, enabling builders to produce durable, lightweight .308 lowers at home with professional precision and minimal tooling.
Key Features and Specifications:
Compatibility: Optimized for DPMS Gen 1 .308/AR-10 lowers; also supports AR-15, AR-9, AR-45 platforms with jig versatility.
Quantity: (1) Easy Jig® + (3) weapons-grade polymer 80% lower blanks.
Jig Material: Reinforced polymer with steel inserts and patented Trident mounting for zero-movement milling.
Lower Material: Glass-reinforced nylon polymer for corrosion resistance, lightweight (6-8 oz each), and high durability.
Included Components: Easy Jig® system, three .308 80% lowers, drill bits, end mill, custom wrenches, and detailed instructions.
Build Time per Lower: 60-90 minutes using standard router, drill, and vise.
Lower Features: Integrated trigger guard, flared magwell, ergonomic design for enhanced handling and mag changes.
Durability: Jig rated for 100+ builds; polymer lowers withstand rigorous use comparable to billet aluminum.
Usage Instructions:
Secure each .308 80% lower blank in the Easy Jig® using the snap-fit clamps and rear buffer support adjusted for .308 platform. Follow sequential steps: drill pilot holes with provided bits (5/32″, 19/64″, 3/8″), then mill fire control group pocket and trigger slot using the solid carbide end mill guided by layered depth pillars. Apply cutting fluid, remove chips frequently, and verify alignment with built-in gauges. Repeat for all three lowers. Polymer80USA videos detail router settings and safe operation for flawless results.
Packaging and Storage:
Kits arrive in a secure, organized box with jig components separated, lowers protected in foam inserts, and tooling in protective sleeves. Store in a dry, cool environment; keep jig assembled or in case to preserve alignment for future multi-lower projects.
Safety and Legal Considerations:
Prioritize eye/ear protection, secure workpiece, and proper ventilation during milling. This kit supports legal personal firearm manufacturing where permitted; complies with ATF guidelines for unfinished receivers. Verify federal/state/local laws—Polymer80USA provides resources but users bear compliance responsibility. Not for sale/shipping to restricted areas.
Shipping and Customer Services:
Shipping: Discreet, tracked shipping; restricted in certain states—check eligibility at checkout.
24/7 Support: Technical consultation, build troubleshooting via phone/email.
Product Replacement: Warranty covers defects; quick swaps for damaged items.
Authenticity Guarantee: Genuine Polymer80USA parts with serialization.
Complaint Handling: Responsive resolution within 48 hours.
Why Choose Easy Jig® + (3) .308 80% Lowers?
Ideal for bulk builders or multiple .308 projects, this bundle offers unmatched value with reusable jig, three premium polymer blanks, and precision tooling. Superior to single kits for AR-10 enthusiasts, it delivers lightweight, customizable lowers faster than traditional methods, backed by Polymer80USA’s innovation and community-trusted reliability.
Customer Reviews and Testimonials:
“Finished three .308 lowers in one weekend—jig held perfect, polymer blanks milled smooth as glass.” – AR Builder Pro
“Best bang for buck; lightweight lowers handle recoil like champs after 500 rounds.” – Tactical Hobbyist
“Easy setup, no errors on DPMS pattern—Polymer80 support fixed my router question instantly.” – Home Gunsmith
Frequently Asked Questions (FAQs):
Does this work with Armalite/SR-25 .308 lowers? No, optimized for DPMS Gen 1 pattern only.
What router is recommended? Compatible with most fixed-base routers (see guide); 1.25HP minimum.
Are the lowers aluminum or polymer? High-strength polymer for easier milling and lighter weight.
FFL required? No—80% lowers ship direct; finishing creates serialized firearm per law.
This bundle empowers .308/AR-10 builders to craft multiple custom lowers efficiently, combining jig precision, polymer durability, and full support for a rewarding DIY experience.
5 reviews for Easy Jig® + (3) .308 80% Lowers


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William Johnson –
It was very easy to setup and use as for the fit nice and tight the design is on the money and the direction is so simple to work with. Here is my first build it a 450 bushmaster
Benjamin Brown –
Super simple jig to use. I have completed a polymer and an aluminum lower easily and have several more builds planned. My main advice would be to take your time and make slow passes for the best quality cuts. It is a fairly messy process the shop vac attachment is handy and of course eye protection would be highly recommended obviously.
James Smith –
My first time milling anything. I just followed the instructions, and it came out great!
Alexander Jones –
It was very easy to understand and figure out since it was my first time I wasn’t sure how easy it would be but I can’t believe how easy it was with 80%arms jig I’ll definitely be doing more
Michael Garcia –
It works well