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

Love It

by -

Excellent quality for the price..perfect for a quick build

What’s not too like?

by -

Outstanding billet lower. I wish they had a matching upper receiver…

Magwell too small

by -

Will not accept Magpul or hexmags. Does accept D&H metal mgas, but will not allow BCG to lock back, even manually.
<br>It was good to speak to you on this issue and thank you for bringing that to our attention. Please let us know if we may help you with anything else.

Very nice

by -

They build well all my uppers fit snug and the take down pins match very well

AR 15 stripped lower

by -

Great fit and finish is clean. Threaded bolt catch was a nice added feature. Upper fit was nice and tight, did not need adjustment screw. Great value.

Buy when you can

by -

very well built and finished. Could not beat the price of$69.99 on sale. It will give Aero Precision a run for the money on their M$ receiver Only difference that I found was that rear detent pin hole for the spring was not threaded, but 30 seconds with a 4x40 tap fixed that.

17 Design Receiver

by -

Easy assembly. Love not having to fool with pinning the trigger guard, and the bolt hold opening being treaded it great. Love this lower, want more and more and more.

17designs lower.


Very nice lower, design is cool, i like the finish the media kinda looks brushed..details on the machining are great. So far im digging it.

Almost 4 stars

by -

Ordered some receivers on sale and was initially happy with the fit and finish, however metal mags were exceptionally tight. I would have left a 4 star review for this but 17 Design reached out after I’d posted the issue on social media and they immediately set out to make it right and offered to open up the mag wells for me.
<br>The customer service at Primary Arms as well as at 17 Design make this a 5 star review from my perspective instead of a 4 star.

Well made, great price

by -

I’ve owned several different AR lowers, all are forged. This lower is my first foray into billet. I like the sharp, clean edges of cnc machining vs the rounded appearance of forged. The 17 Design lower has minimal engraving without unnecessary frills. I was impressed with the tension adjustment screw, when tightened eliminates the annoying wobble sometimes present between upper and lower receivers by different manufacturers. My only complaint lies with the design at the bolt release. It’s a little thicker and won’t accommodate a magpul B.A.D. lever due to clearance interference. I’d could probably notch the lever arm but it’s not that imperative an add on. So far, I’m very happy with my purchase and recommend without reservation.