17 Design Coast to Coast Integrated Folding Billet AR-15 Lower Receiver

Manufactured by 17 Design & Mfg.
SKU: 17-CXC-00-IFLRAR15-1
MPN: 17-CXC-00-IFLRAR15-1
Manufactured by 17 Design & Mfg.
6 Reviews

Out of Stock

NOTE: Limit 20 per household. Quantities exceeding 20 will not allow checkout.

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.



17 Design donates $25 to the Coast to Coast Foundation with every purchase.

Everything you know about folding rifles is being disrupted by the price and value of this new AR-15 stripped lower receiver from 17 Design and Manufacturing. 

This 17 Design Integrated Folding AR-15 Lower Receiver will take any standard Mil-spec upper, giving you a range of calibers available in a rifle that can quickly fold away for easy and discrete storage. It's as easy as snapping it straight when you're ready for action.

  • Coast to Coast magwell engraving
  • Machine from a billet of 7075-T6 aluminum
  • Integrated folding stock mechanism
  • Black hardcoat anodized
  • Threaded bolt catch roll pin
  • Includes proprietary buffer

Based in Oklahoma City, OK, 17 Design and Manufacturing does contract manufacturing for military and law enforcement. But now they are making products the public can buy. This side-folding billet receiver is precision machined with razor-thin tolerance levels. 17 Design and Manufacturing personally oversees the development, design, and machining of every part that comes off the line. They're not like every other manufacturer.

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

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

Ratings & Reviews

6 reviews

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Works well... needs break-in


Lower assembled easily. Good feel, good machining, really like the finish. Logos and engraving understated, almost invisible. <br><br>Folder: well-thought-out and engineered design. Very stiff initially. Should apply Rocksett to pivot screw to prevent nut loosening. Needed oil and about 30 min (~400 open/close cycles) to loosen folding mechanism. Hand placement on the buffer tube (and use of thumb to operate release) takes some getting used to. Folds down slightly more compact than the LAW. Overall folded length of the weapon is shorter by just under 1". Elongated buffer does not protrude past the rear of the receiver when folded. We need buffer weight options for H2/H3. <br><br>Feel is not as smooth as the LAW folder initially, but I am sure that will come with continued use. Overall, I am extremely happy with this purchase and intend to acquire at least two more to build SBRs.

Stout receiver perfect for a PDW.


Even in these crazy pre civil war pt 2 times, a $250 mil spec folding reciever is definitely a bargain, tho at time of writing it costs $300 now, but I say it's still beats the LAW tactical on any other billet receiver. 17 Design and Manuf. really puts out a quality product, period. For anyone iffy about the company, they're the same LE and Mil contractor that gave us the Shield Arms S15 glock magazine, so rest assured quality is written all over. Set screw tapped and threaded. This receiver blows all others out of the ballpark.

Absolutely great.


Best option I've found for folding an AR. Better than the LAW Folder, hands down. Beefy, rugged, and a very intuitive folding mechanism.

Fan-Freaking-Tastic lower!!!

by -

This lower is very nice in fit and finish. The integrated folding is great and doesn't have the slop in so many of the add-on folders. Having the extension on the buffer rather than added to the bcg is much better and allows you to open the upper from the lower without removing anything to do so. One of my favorite lowers so far!

Just arrived...


First impressions. Yep! It's a lower and a folder mixed in one. AND mine came with the NEW H1 that with the SS extension, NOT the cheap(er) one pictured with the lower. I was presently surprised about that.
<br>The folder hinge seems durable. We'll see. The release button also seems very sturdy and tight. You gotta press it very intentionally.
<br>The bolt stop/release lever retaining pin is threaded so no more having to beat a roll pin in place and stretching up your lower.
<br>No more to report at this time.

Great design

by -

I really like the integrated folder on this lower. It keeps the overall length a little shorter than the law version. It is well built and seems to be holding up well to the use. Recommended.