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AR15 Mil-Spec Lower Receiver
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SKU OH-LR02UPC 850078799357
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- Limited Lifetime warranty
- Ships to your dealer
How buying a lower works
- Order online.Pick any options above, then check out.
- Choose your dealer.At checkout choose a dealer that is close to you for transfer.
- Pick it up.Your dealer checks your ID, runs the required background check and hands it over. You must be at least 21 to buy a lower receiver.
Lower Receiver Specifications
| Barrel | |
|---|---|
| Caliber | Multi |
| Other | |
| Material | 7075-T6 |
| Receiver | Forged 7075-T6 aluminum, stripped |
| Finish | Type III hard-coat anodized |
| Compatibility | Mil-spec AR-15 uppers and lower parts |
| Dimensions | 10 × 5 × 3 in. |
| Origin | |
| Manufacturer | One Horse |
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AR15 Mil-Spec Lower Receiver
The One Horse AR15 Mil-Spec Lower Receiver is a stripped, forged 7075-T6 aluminum lower machined to mil-spec dimensions and finished in Type III hard-coat anodizing. It accepts standard AR-15 lower parts kits, buffer tubes and stocks, and pairs with any mil-spec AR-15 upper, so it's a clean starting point for a rifle or pistol build.
Comparing builds? See both One Horse lowers side by side on our AR-15 lower page.
Every One Horse rifle and component is made in America with uncompromising standards. We use U.S.-sourced materials, U.S. manufacturing, and strict quality control at every step. No shortcuts, no imported surprises — just dependable parts built by people who take pride in American craftsmanship. When you run One Horse, you’re running gear you can trust every single day.
AR15 Mil-Spec Lower Receiver questions
How do I get my lower?
At checkout choose a dealer that is close to you for transfer. We ship to that dealer and you pick it up there.
How old do I need to be?
You must be at least 21 to buy a lower receiver.
Does it ship free?
Orders of $399 or more ship free.
Is there a warranty?
Yes. One Horse backs it with a Limited Lifetime warranty.
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