Orchid Defense Group Forged Stripped AR-15 Lower Receiver

Manufactured by Orchid Defense Group
SKU: OD-15-S
MPN: OD-15-S
Manufactured by Orchid Defense Group
11 Reviews

In Stock

Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 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.
•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.



The Orchid Defense Group AR-15 Stripped Forged Lower Receiver prides itself on being put through tough tolerances so that it can be a called a true fighting weapon. Orchid Defense lowers are designed in state-of-the-art facilities. This lower features a SAFE/SEMI/AUTO short throw safety selector markings. This Orchid Defense Group AR-15 Stripped Forged Lower Receiver is an epic way to start off your next AR-15 build. 

  • Mil-Spec Dimensions 
  • Auto Pocket Cut
  • Forged 7075 T6 Aircraft grade aluminum
  • Black Hardcoat Anodized surface
  • Multi Caliber
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BrandOrchid Defense Group
Caliber MarkingMulti-Caliber
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

Ratings & Reviews

11 reviews



by -

Fit and finish are solid. It's a clean look without a bunch of text printed everywhere on it, good piece for engraving. The tolerances are all good, but the magwell is a little on the tight side, felt best with my lancer mags.

Runs great!

by -

Bought this stripped lower for a budget build. I am seriously considering making this my primary go too. Highly recommend this lower. Fit and finish was superb. And not a single flaw in the geometry of this.

Solid lower


This is only a first impression, as I’m waiting on a few more parts, but This is a solid lower. Markings are very subtle which is hard to find. I would have picked up more when they were on sale but I wanted to see it in person before I ordered more.
<br>Will buy again assuming build goes smooth.



Good lower, but the magwell tolerances seem to be off. It is very noticeable with aluminum/steel mags as you have to literally pull them out. When it comes to polymer mags like PMAGs (Gen M2 MOE's to be exact), the magwell does not have any problems. Another review stated Lancer Mags worked best for them, but for me they were also a little tight (not as tight as complete bodied aluminum/steel mags). Giving three stars because 90% of my mags are GEN M2 PMAGs so its not too much of an issue, but be weary of this product before purchasing. Not a good look at all having to yank your mag out under possible extreme conditions.

A new standard!


I'm several lowers deep with Orchid and am happy to have another company out there who likes it tight! Other than my KAC lowers, these are an absolute go to!!! Hats off to this little Vegas company, that's kicking ass where it counts and Primary for offering them! You will not be disappointed with this lower!!


by -

The fit and finish on the lower is great, the issue is the magwell is out of spec. The magwell measures 0.015 tighter than any of my other lowers with a set of calibers. None of my metal magazines will fit in this lower. Most brands of polymer magazines are a tight fit and do not drop free. I emailed the listed address on the Orchid Defense website regarding the issue, and have yet to get a response in the past three weeks. The great fit and finish is worthless with the out of spec magwell. Buy any other lower.
<br>Thank you for getting back to us on this. Please ley us know if we may help you with anything else.

Was skeptical about magwell tightness, not anymore

by -

I read another review about the tight mag well, didn't want to purchase it at first. Price was too low to pass out. I ended up getting three and are very satisfied with my purchase. I have all different types of magazines. From Magpul M2 and M3, aluminum, steel. They all drop freely.

Great Piece

by -

Great piece for the price. Everything fit well and looks great.

Great Value

by -

For the money, you can't beat this lower receiver. Money well spent.

Need a good stripped lower for one of my builds

by -

I have one of these lowers already, and saw thus on sale. And jumped on it. Had it shipped to my local FFL, and she's a beauty. Thank you primary arms. AND YES.! , I WOULD RECOMMEND THIS TO ANYONE WHO WANTS A QUALITY LOWER.