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.
38 Reviews
$70.99 $129.99

In Stock

Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•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!
See More


Brand17 Design & Mfg.
Caliber MarkingMulti-Caliber
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

Ratings & Reviews

38 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Solid build


Extreme precision and quality craftsmanship. Made in my home state in Oklahoma. Highly recommended!

Tremendous Value!

by -

Well built and designed lower, would be a great value at a much higher price. It’s just the thing I needed to build my long range rifle. Highly recommend.

Excellent lower receiver for the price

by -

I assembled AR15 with 17 Design Billet lower receiver and was surprised how Palmetto Armory's upper receiver and it's lover receiver parts matched all lower receiver dimensions. Assembly was easy, and first test shows very reliable work with good target results.

17 Design Billet lower

by -

This a very nice billet lower.Lines were all crisp and clean, mil-spec parts slipped right in. Very nicely made, will very much buy more when the panic buying ends.

Great lightweight AR lower

by -

Great AR lower, super lightweight and fits any AR upper like a glove.
<br>Thank you Pimary Arms

Solid Billet Lower


$130 for a billet lower?? Why so cheap??
<br>Took a chance and bought it without much info available on it. It locks up to all my BCM and Aero uppers nice and tight. Screw in bolt catch and tension set screw (it's there, just didn't need it). No visible machine marks, smooth finish and everything seems to be in spec. There's no safety Select stops which threw me off at first but it aids in the appearance of it. Luckily these are always in stock so if I decide I NEED another lower I can pick one up.

Great billet lower for the price!


Couldn't be more pleased with this lower. Can't beat the price for a billet lower, I will be ordering more!

Nice Billet Lower


Nicely machined. Nice finish. Low price point for a billet lower. Married nicely to an Aero Upper; no need to adjust the lower tension screw. A threaded bolt catch with a set screw eliminates the need to tap in a roll pin. Suggest using an enhanced magazine release button due to the extra wall thickness of this billet lower. Other websites indicated some QC issues that apparently have been worked out.

17 Design Billet - nice, very nice

by -

These are very nice lowers, I’ve put dozens of lowers together from all different manufacturers. Got to say, the threaded bolt release pin is a great idea. The rest went together without any issues. Finish is nice too. Scores a 10 out of 10 for me.

Excellent lower. Worth the cost.


This lower is Excellent. Precisely made, high quality, everything in spec. AND the only lower I found with a nicely flared mag well, integral trigger guard (oversize for gloved hands) and and a captive bolt catch pin - no tiny roll pins to pound in.
<br>Built a DMR with an 18" 1/8 HB upper, quality parts kit and match trigger. The upper fit precisely with zero daylight and no play. Thx for the stimulus check, new administration. Putting it to good use!