In Stock

80% 308 CNC Lower Receiver RAW


Weight 1.12 lbs
Dimensions 9.75 × 4.25 × 2.25 in
SKU: 80-308-raw Categories: ,


80% 308 CNC Lower Receiver RAW

  • Matches with Aero Precision M5 upper receiver.
  • Works with DPMS parts & magazines
  • Fully CNC machined from solid 6061 aircraft grade aluminum
  • We ONLY purchase raw aluminum manufactured in USA
  • Broached magwell
  • Integrated trigger guard
  • 6-32 threaded pin/screw, for the bolt catch.   (replaces roll pin)
  • Added nylon tipped torsion screw in rear of lower.


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Settings80% 308 CNC Lower Receiver RAW removeLR308 Billet Lower Receiver removeAR 10 80 Percent Lower DPMS Gen 1 Anodized Billet Receiver removeBlack 80% DPMS AR-10/308 lower WITH Lower Parts Kit remove80% Arms 80% .308 Billet Lower Receiver Type III Hard Anodized removeRAINIER ARMS ULTRAMATCH .308/7.62 MOD 3 BILLET AMBI LOWER RECEIVER remove
Price$119.00 $175.00$115.00$120.50 $199.95$119.99$402.93$309.99
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Weight 1.12 lbs
Dimensions 9.75 × 4.25 × 2.25 in
Billet .308 lower receiver manufactured by Quentin Defense, made in Gilbert, Arizona.
  • NEW rear take-down slot!
  • Gen 1 DPMS 80% Lower Receiver
  • 7075 T6 aircraft-grade aluminum
  • Accuracy to within one thousandth of an inch (+/- 0.001)
  • Broached Magwell
  • Integrated Trigger Guard
  • Hard coated, anodized black to MIL-A-8625 Type III Class 1
Black Anodized 80% DPMS 308 lower with Lower Parts KitRainier Arms UltraMatch .308/7.62 Mod 3 Billet Ambi Lower Receiver
Content80% 308 CNC Lower Receiver RAW
  • Matches with Aero Precision M5 upper receiver.
  • Works with DPMS parts & magazines
  • Fully CNC machined from solid 6061 aircraft grade aluminum
  • We ONLY purchase raw aluminum manufactured in USA
  • Broached magwell
  • Integrated trigger guard
  • 6-32 threaded pin/screw, for the bolt catch.   (replaces roll pin)
  • Added nylon tipped torsion screw in rear of lower.
Quentin Defense Billet Lower Receiver. LR308 Style. -Manufactured from a solid billet block of aerospace grade 6061-T6 aluminum. -Accepts most upper receivers designed from the LR308 platform. -Accepts all standard mil-spec AR15 internals. -Will accept mil-spec or commercial receiver extension. -Must ship to a licensed firearms dealer (FFL) in your state of residence. -AZ residents are welcome to pick up at our facility in Gilbert, Arizona Select local pickup at check out.   This is a firearm purchase and all firearm purchases require an FFL to ship to.  Please include your desired FFL for transfer in the comments section when making your purchase and we will contact the dealer on your behalf. **We are a licensed firearms dealer (FFL Holder), all firearm sales require a federal background check. Local firearms transactions can be completed in person at our store in Gilbert, AZ or we can ship to your desired FFL holder for transfer. Buyer assumes all shipping costs, transfer fees may be incurred at time of transfer, check with your FFL Dealer for details. All State and Federal Laws apply to every firearm transaction. Check your local laws to ensure the legality of your purchase prior to making said purchase. All applicable taxes apply.**  

Additional information

Weight 28 oz
MANUFACTURER: Quentin Defense
Color Black (BLK)
Material: 6061 T6 Aluminum
Coating: Type III Class 2 Hard Coat Anodize
Specification: DPMS Style
At American Made Tactical, we know the lower receiver is the lifeblood of any AR build, which is why we designed our anodized billet receiver for your AR10 80% lower Gen 1 DPMS build. Our receiver is made from 7075 T6 aircraft-grade aluminum and features a new rear take-down slot. This lower receiver was made to fit most gen 1 AR10 80 lower DPMS builds and was fabricated to meet our high-performance standards for the range or field.  Purchase a new black anodized billet lower receiver to finish your AR10 build today.

What is the difference between DPMS Gen 1 and 2?

There are few differences between the gen 1 DPMS AR 10 lower that we’ve come to love and the newer gen 2 rifle. The most significant difference between these two is that gen 1 AR10 80 lower DPMS has been around a lot longer, which means you’ll find much more third-party support for supplies and products when building and upgrading your gen 1 rifle than with a gen 2. To those on a budget, this could be a huge factor. The gen 1 AR10 lower is also a very substantial gun in size and weight, while gen 2 shaves off a few pounds and is significantly shorter. This added mobility and a new design will help with options such as handguards but keep in mind that if you’re going to be building or upgrading any gen 2 rifles, you’ll most likely be stuck with proprietary options.

Are DPMS lowers any good?

While there are a lot of options in the market for a new AR10 lower, the key to truly getting the rifle you want is with a DPMS lower. With a DPMS AR 10 Lower, you have much higher compatibility for parts and upgrades to your DPMS lower build vs. Armalite, and the parts are more readily available. You’ll also be able to interchange magazine types, styles, and brands with DPMS 80% lower. While a lower may take a little bit of work to build, the end result of building an AR10 80% Lower is a rifle that is 100% yours and usually a much more cost-effective alternative to buying a brand new DPMS with the same high-performance shooting capabilities.  


WEIGHT 1 lbs
DIMENSIONS 9 × 2 × 3 in
MAKE Billet
FINISH Anodized
FIRE/SAFE ENGRAVING OPTION Yes, I want the Fire/Safe Engraving, No, I do not want the Fire/Safe Engraving

80% Black DPMS AR-10/308 Lower Receiver with Lower Parts Kit

The 80% Black Anodized DPMS 308 Lower receiver and  LPK  Value Buy has been put together with 7075-T6 Hardcoat Anodized Lower.  Along with our AR-10/308 Lower comes with a complete AR-10 LPK ready to complete the internal workings of your lower once it has been machined to completion. The operations left to be completed on our 80% lower is as follows:
  • fire control group
  • trigger pin
  • hammer pin
  • trigger slot
  • safety selector hole.
Features of the 308 Lower and LPK value Pack:
  • DPMS 80% Lower and Lower Parts Kit
  • Lower Hardcoat Type III Anodized
  • Complete LPK including fire control Group
  • Savings of Approx. 10% off buying separately

The 80% Lower Receiver is not a Federal Firearms License item. This receiver is machined to 80 percent and still requires machining to be completed.

Weight 6 lbs
Color Black
Platform AR-10
Lower Material 7075 T6 Aluminum
80% Lowers are NOT a firearm and CAN ship directly to your home. Additional machining will be required to complete the firearm. Purchasing a Jig and having access to a router or mill is required to manufacture this into a firearm. 80% Arms manufactures billet lowers using US sourced aerospace grade 6061 aluminum which is more resistant to corrosion and is much easier to mill than any other alloy used to make lower receivers. Their lowers carry a lifetime warranty. Features:
  • DPMS Gen 1 Pattern Compatibility
  • Type III Hard Anodized Black to Milspec
  • Compatible with both DPMS and SR-25 Magazines.
  • 5 axis CNC machined from billet to extremely tight tolerances
  • Integral trigger guard
  • Semi / Safe selector marking engraved on both sides
  • Ultra-tough reinforced billet design
  • Broached magwell
  • CMMG Mk3 lower Parts Kit is recommended for 80% Arms 308 lowers
  • Rear takedown lug area comes already milled out
*Operations left to complete are as follows: fire control group, trigger pin, hammer pin, trigger slot and safety selector.


All GCA and NFA rules apply when you complete this project. Please ensure you fully understand your local and federal laws before completing this 80% blank into a functioning receiver.

Our billet sets are CNC machined from solid billet 7075-T6 aluminum which is 70% stronger than the commonly used 6061 aluminum and finished with milspec hardcoat anodize to a surface hardness of 60 Rockwell. We have designed our lowers with an ambidextrous mag release and bolt release with extended latch for smoother deployment. The precision machining on our billets lowers will line up perfectly to our Rainier Arms UltraMatch Billet Upper Receiver and may not fit most upper receivers


  • Ambidextrous Extended Bolt Release
  • Ambidextrous Magazine Release
  • 7075 Billet Aluminum
  • Flared Magwell
  • Integrated Trigger Guard
  • Tensioning Screw for proper Upper/Lower Fit
  • Compatible with 45° safety selector levers
  • Weight 12 oz
FFL Required Before Shipping. Please have your dealer email their license to [email protected] or they can also fax it in. Please give us a few days to process the information.
Additional information
Fire/Safe Engraving Option

Yes, I want Fire/Safe Engraving, No, I do not want Fire/Safe Engraving

Add Bolt Catch Screw?

Yes, No

Add an 80% Lower Completion Jig

NO Jig Provided, Include 80% Arms Easy Jig Gen 2 Multiplatform (AR-15 / AR-9 / LR308) [Add $234.95]

Add Router Jig Tool Kit*:

None, 80% Arms Easy Jig Gen 2 Toolkit (Gen 2 Jig Only) [Add $47.99]