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M1-80% AR10 with M1-80% Universal Milling Jig


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M1 Machining is proud to announce the release of  M1-80% AR-10 DPMS Lower Receiver.  The M1 Machining .308 DPMS 80% lower receiver is precision 3-D machined from solid Aerospace Billet 7075-T6 Aluminum to Military spec tolerances, finish options are; machine finished and Mil 8625 Type III. All that is left to do is machine the fire control pocket,  the trigger group and drill a few holes. Once complete you will have a fully functional M1 Machining .308 DPMS pattern lower receiver for .308 / 7.62x51 NATO, compatible with DPMS platform upper receivers, Magpul, SR-25 & DPMS LR-308 Magazines. This is a top-tier AR-10 80% lower receiver perfect for any high quality AR-10 build. 


• MIL-SPEC Type III hard coat anodized in Black or Raw

T6 Heat-Treated Aerospace 7075 Billet Aluminum

• Completed weight: 11 ounces

• Integral winter trigger-guard for added strength

• Flared magwell to improve mag changes.

M1 Machining official release of the Patent Pending Universal Milling Jig.  M1 Machining pushes the limits with innovative ways to make owning an AR15 80% Lower Receiver and DPMS AR10 LR 308 80% Lower Receiver more affordable to the end users.  Owning M1 Machining’s M1-80 Universal Jig eliminates you needing to purchase individual jigs for the AR15 and AR10 saving our customers time and money.  M1 Machining also sells plates individually just in case the user damages the Jig during the milling process.  M1 Machining’s Universal Milling Jig has many key features that make it stand out from the rest and makes us a top tier Manufacturing Company that is proud to say we are American Built!


-          Made from 6061-T6 Billet Aluminum

-          Comes with bolts and washers for easy assembly

-          One top plate to eliminate multiple plates and confusion

-          2 washers included for increased support and Jig longevity

-          Milling instructions included

-          Milling tools needed to complete lower receiver (added cost)

-          AMERICAN BUILT!


Because 80% Lowers are not considered firearms by the ATF, we can ship them right to your front door with no FFL required... but finished rifles must meet all applicable laws and you must be able to legally own a firearm. Compliance with all laws is YOUR responsibility. All sales are subject to our Returns and Cancellation Policy.



Customer Reviews

Beautiful 80% Receiver Review by Andy
Customer Service
Receiver came via USPS on Saturday. The finish is impeccable; no scratches or blemishes whatsoever. Unfinished receiver feels solid.

The only reason I gave a four star review for customer service is because I really didn't have any interaction with CS, and the link for parcel tracking did not work, probably because I completed the transaction as a "guest." (Posted on 12/13/2015)
Absolutely Amazing!! Review by Cyrus
Customer Service
All around amazing. I met Mike in person, and his character matches the product.

Unless you have grand plans for the coating, throw down the extra $10 for the anodizing, absolutely worth it. The anodizing is so smooth and practically bulletproof.

These receivers look great, but also have a really solid feel. The front portion and surrounding mag well are built up, so you do not have to worry about any metal fatigue for a long long time.

I have bought 80% lowers from other companies, and I have to say this is definitely the best ones thus far.

Even the jig and instructions are more than sufficient. (Posted on 9/22/2015)

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