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The ODIN Works OTR-15 billet lower is the kind of part that sets the tone for an entire build. Machined in-house from a solid block of 7075 aluminum, it carries the tight tolerances and refined styling ODIN Works has built its reputation on. This is the same lower that anchors their complete OTR-15 rifles, now offered on its own so you can build around it. The black hard-coat anodized finish holds up to real range time and resists the wear and corrosion that comes with regular use.
The details are where this one earns its keep. You get a beveled magwell that guides mags home fast during reloads, plus an integrated trigger guard machined right into the body, so there's no rattly aftermath piece to fuss with and more room for gloved hands. Safety selector markings are cut into both sides for ambi setups, and the lines are designed to match the ODIN Works billet upper for a seamless, custom-built look when you run the pair together.
As a multi-caliber AR-15 platform lower, it works with standard AR-15 upper receivers and takes the usual lower parts kit, buffer tube assembly, and grip of your choice. That makes it a flexible starting point whether you're chasing a lightweight range gun, a precision .223 Wylde setup, or something in between. It weighs right around 16 ounces and measures about 10 inches long, keeping things in familiar territory for anyone who's built on an AR-15 before.
If you want a lower that looks the part and shoots straight, the OTR-15 delivers billet quality without the guesswork. Pair it with an ODIN upper for the full matched look, or drop it into your own parts collection and make it yours.
This is a stripped lower receiver, meaning it comes as the bare machined receiver without a lower parts kit, buffer tube assembly, or grip installed. You'll add those components to finish the build. That gives you full control over your trigger, safety, and furniture choices.
Yes. It's designed to mate with standard AR-15 upper receivers, so you can run it with the ODIN Works billet upper for a matched look or with any mil-spec-pattern upper you already own. The lines are cut specifically to pair cleanly with the ODIN upper if you want the full set aesthetic.
It's a multi-caliber AR-15 lower, which means the receiver itself works across the many chamberings the AR-15 platform supports, from 223 Rem and 5.56 NATO to 300 Blackout and beyond. The actual caliber is determined by the upper and barrel you pair with it. That flexibility makes it a smart base for more than one kind of build.
Billet means it's machined from a solid block of 7075 aluminum rather than pressed from a forging, which lets ODIN Works add refined details like the sculpted lines and integrated trigger guard. The result is a receiver with a distinctive look and precise tolerances. Forged lowers are more common and budget-friendly, while billet lowers like this one lean toward style and fit.
| UPC | 850036719984 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | OTR-15-Billet-Lower-BLK |
| Action | |
| Caliber/Gauge | Multi |
| Color | Black |
| Model | |
| Product Type | Stripped Lower Receiver |
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