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AR-10 .308 / Lower Jig

$119.00 $70.00

80Lowers presents our Gen. 1,  AR 10-.308 80% Lower Receiver Drill and Milling Jig which is machined from 6061-T651 Billet Aluminum.

+ $59.00

Everything To Finish

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This Drill Fixture will allow you to finish the machining process for our Billet .308 80% Lower to include the FCG (Fire Control Group) Pocket, Hammer and Trigger Pin Holes and Safety Selector Hole.

Drill Fixture Contents:

Our 5-piece 80% Lower Receiver Jig Kits include the following:

  • Left Hand and Right Hand Side Plates
  • Drilling Top Plate
  • Milling Top Plate
  • Trigger Slot Drill-Mill Top Plate

Jig Compatibility:

Our Lower Jig is designed specifically to fit our Billet AR 10 .308 80% Lowers. It will also work well on many other Billet AR 10 .308 AR-10A / SR25 / DPMS style 80% Lowers but not Armalite AR-10 B Style 80% Lowers. And since we hold very tight tolerances on our Lowers, our Lower Jig will NOT work with 80% Lowers that are “under spec” in width either.

One aspect of our Lower Jigs that is unique to our 80% Lower Receiver is that we have already milled the Upper Rear Pocket of the Lower so it is not a part of our Jigs.


  • (5) Pc Lower Jig Set Including Drilling Plate
  • 100% Mil-Spec 6061-T651 Billet Aluminum
  • Hard Anodized Blue per Mil-A-8625 Type III Class 2
  • Optional (6) Pc Tool Kit Available

Jig Finish:

Our 80% Lower Receiver Jigs are now Anodized Blue (or soon will be) in the “Raw” state directly from our CNC machines and they are de-burred only.

You can review our 80% Lower Receiver Jig Instructions to better understand the Drilling-Milling Procedure.

Availability / Shipping:

Our Lower Jigs are in stock most days and can ship within 3-5 days. Your credit card will not be charged until order ships.

FREE Shipping on Orders over $199.

How to Order:

NO FFL Required!  You can order this 80% Lower Receiver Jig by adding it to your cart and purchasing securely over our website. Or e-mail us requesting that we contact you by phone to place an order that way. This 80% Lower Jig can be shipped to any persons over the age of 18 by USPS Priority Mail.