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AR-10 .308 Eighty Percent Lower Jig

$99.99 $64.95

Presenting our AR-10 .308 80% Lower Receiver Jig fixture for a Drill Press.  Add the Tool Kit and Save $10 over buying separately.

+ $40.00

Everything To Finish

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This Drill Fixture will allow you to finish the machining process using a standard drill press 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 4-piece AR 10 80% Lower Receiver Jigs includes the following:

  • Left Hand and Right Hand Side Plates
  • Drilling/Trigger Slot Top Plate
  • Milling Top Plate
  • Needed Fasteners

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 the Armalite AR-10 B model 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  of 0.906″ wide at the FCG.

One aspect of our Lower Jigs that is unique to our .308 80% Lower Receivers is that we have already milled the upper rear/take down lug pocket of the Lower so it is not a part of our Jigs.


  • (4) Pc Lower Jig Set Including Drilling Plate
  • 100% Machined from 6061-T6 Billet Aluminum
  • Optional (4) Pc Tool Kit Available

Jig Finish:

Our AR-10 .308 80 Percent Lower Jigs are shipped in the ‘Raw’ state directly from our CNC machines, and they are deburred only.  You can review our 80% Lower Receiver Jig Instructions to better understand the Drilling and Milling Procedure.

Availability / Shipping:

Our Lower Jigs are in stock most days and can ship within 1-4 days.

FREE Shipping on Orders over $199.

NO FFL Required!  This AR-10 .308  80% Lower Jig can be purchased securely over our website, and shipped to any persons over the age of 18 by USPS Priority Mail.  Jigs and tool kits can be shipped to New Jersey.