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Elite Builder 80% Lower Jig - AR-10/.308



The .308 AR is one of the most capable and accurate weapon platforms on the market. If you’re building your own AR-10-type rifle from scratch, you need a jig that’s just as accurate. Elite Builder took their precision AR-15 jig and re-tooled it to accept DPMS-patterned LR-308 80% lowers. This jig is capable of machining any .308 receiver with accuracy as tight as one-thousandth (0.001”) of an inch.

You can also now choose to include the enhanced drill plate to further make it easier for you to drill and hollow out your fire control group pocket.

PLEASE NOTE: Tooling for this jig is optional. You'll need to select whether you would like accompanying tooling with your jig.

Click here for Elite Builder Jig instructions.

Quality HSS-Tungsten Bits

The jig’s just half the equation. To ensure that level of accuracy with your build, you need the right bits and tooling. Elite Builder came up with a set of quality HSS bits, reinforced with tungsten. These ultra-hard bits excel at cutting and drilling billet or forged aluminum - exactly what you need for your 80% lower. Choose the option to add them onto your jig to ensure the most accurate milling and drilling possible. The tooling includes:

  • (1) ⅜ Drill Bit - 5”
  • (1) 5/32 Drill Bit - 3”
  • (1) ⅜ Short End Mill - 3”
  • (1) 5/16 Short End Mill - 4”
  • (1) ⅜ Long End Mill - 4”

Jig Features & Specs:

  • Compatible with any DPMS (LR-308) 80% lower
  • Self-aligning jig requires no special fitting during setup
  • Black anodized finish protects against rust and corrosion
  • Pre-drilled holes for hammer, trigger, and safety pin holes
  • Reinforced steel template plates for completing multiple lowers


*Important - This jig was designed with a drill press in mind for completing your 80% lower and is not designed to be used with a router/laminate trimmer.

Made in the USA  Lifetime Warranty

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

80LowerJig.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

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.