17 Design AR-15 Stripped Lower Receiver - Mil-Spec - Black

Manufactured by 17 Design & Mfg.
Manufactured by 17 Design & Mfg.
5 Reviews

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.
•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 aluminum AR 15 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 lower receivers to the public.

  • Mil-Spec dimensions
  • Forged 7075-T6 aluminum
  • Stripped
  • Open ear
  • Black hardcoat anodized

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 stripped lowers while supplies last!
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Brand17 Design & Mfg.
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

Ratings & Reviews

5 reviews

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Very well made


Picked one up recently, looks well made.

Will be looking for more

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I bought this purely because it was the cheapest lower Primary Arms had in stock, but I will seek out 17 Design in the future. Beyond a basic stripped lower, this has a rear set screw for properly tensioning your rear takedown pin and they are made in Oklahoma City! Very happy with this lower.



This company is local to me and as a supporter of local businesses I purchased this lower. The overall finish is great! Did not have any issues putting it together and shot flawlessly when taken to the range. I have since purchased two more lowers and look forward to more products.

Best stripped lower I have used


Well made, and when assembling it, did not need to ream out the holes for pins to go in. Everything fit perfectly. Only one I have used that fit so well.

17 Design

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Absolutely hands down is an absolute top notch military spec lower receiver fit and finish work perfect which is more than I could say for some lowers that I purchased that were twice the money you can't go wrong with this lower awesome!!!!