17 Design Billet AR-15 Stripped Lower Receiver - Black

Manufactured by 17 Design & Mfg.
SKU: 17-17D-00-NFDLAR15-1
MPN: 17-17D-00-NFDLAR15-1
Manufactured by 17 Design & Mfg.
110 Reviews
$69.99 $129.99

Out of Stock

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



Start your next AR-15 build with this Mil-spec black anodized billet AR-15 aluminum receiver! This AR-15 stripped lower is made in Oklahoma City, OK by 17 Design and Manufacturing, a company that equips military and law enforcement with small and medium machining capabilities as a contract manufacturing and engineering focused shop. Now they are selling billet lower receivers to the public.

  • Mil-Spec dimensions
  • Machined from a billet of 7075-T6 aluminum
  • Stripped
  • Black hardcoat anodized
  • Integral trigger guard
  • Threaded bolt catch roll pin

Save money by building your own rifle from parts. Learn about how the firearm functions by assembling it yourself. Hand pick each component to suit your precise needs. 

Accuracy in machining is crucial to ensure your receiver will be compatible with parts from other manufacturers. 17 Design and Manufacturing has razor thin tolerance levels and personally oversees the development, design and machining of every part that comes off the line. They're not like every other manufacturer. 

Whether you're stocking up for a rainy day or looking to get started on your next build, grab one of these billet stripped lowers while supplies last!
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Brand17 Design & Mfg.
Caliber MarkingMulti-Caliber
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

Excellent value


Great fit and finish. Uses Allen head screw to secure the bolt release rather than a roll pin. Everything assembled well and has functioned flawlessly to this point.

17 design billet receiver. Thumbs up!

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Nice fit and finish. Best deal I have seen in billet. Will buy again.

Good Lower

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Everything fit into the lower well. The lower mated with the upper as good as any other.

Nice work

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No Issues fast shipping Goes Together Nice No Fit problems Good Machine Work

17 Design Billet Lower

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Absolute Quality, at a Great price. Thanks Primary Arms.

Nice but...

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For the first problem, I'm going to blame the upper. I had to file down the curved portion of the upper where it seats into the lower in order to get the takedown pin installed. It took about fifteen minutes but I got it together.
<br>The other problem is the bolt catch gap. I didn't think much about it until installing a Magpul BAD lever. There's too much wobble for it to work. The device tends move forward where it locates itself over the bottom left portion of the lower's mag well and doesn't allow the full movement of the lever to effectively lock the bolt. Even manually, I can't pull the bolt back out of battery and manually lock it down without difficulty.
<br>It's a nice lower but I'd rather have a Spikes.

Billet lower at a great price.

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Billet lower at a great price and fast service; P/A hits another one out of the park!



Tolerances are tight, seems to be very well machined. I have it paired with an 11.3" ballistic advantage barrel and everything is great


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Very nice lower receiver. Machining was top notch and everything fit perfectly. Well worth the little extra money over any forged receiver I have used

So convenient

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These lowers rule I have them on 3 different AR platforms including the lower with integrated folding stock. The way it’s made is not too over board but still cuts some weight and i love how the bolt catch is threaded instead if a pin. Will continue buying for sure.