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American Defense's UIC stripped lower delivers the kind of quality you notice the moment you pick it up. Machined from a solid 7075-T6 billet, this lower is 40% stronger than traditional mil-spec forged receivers while only adding half an ounce of weight. The Type III Teflon-impregnated hardcoat anodize finish gives you long-lasting corrosion resistance and durability that handles real use without breaking down.
The real standout feature is the fully ambidextrous design. You get an ambidextrous magazine release and bolt catch pre-installed from the factory, so both right and left-handed shooters can operate the controls naturally. The dimpled takedown and pivot pins ensure repeatable, secure fitment every time you assemble or disassemble your rifle. If you've ever dealt with loose pins or sloppy takedown, you'll appreciate this attention to detail.
The 20-degree competition-style magazine well is integrated into the receiver, giving you fast, smooth mag changes without unnecessary bulk sticking out the side. The enlarged trigger guard is ready for winter gloves or heavy-duty use, and the chamfered edges throughout the design make it smooth in the hand while improving CNC machining to a level most builders won't notice until they're using it. An integral tension adjustment screw lets you dial in the fit between your upper and lower so everything feels solid.
This ships as a stripped lower, meaning you'll need to source your own FCG, buffer tube, and stock. The good news is compatibility is straightforward. Standard GI-type triggers, drop-in triggers using standard pins, and Geissele triggers all work without issues. A note for custom trigger builds: some aftermarket triggers with anti-rotation pins that have external screws or plates won't clear the ambidextrous bolt catch, though American Defense makes a low-head pin option for CMC Triggers. All the ambidextrous components come installed, so you're not starting from scratch.
Yes, standard GI-type triggers, drop-in triggers using standard pins, and Geissele triggers are all compatible. Some aftermarket triggers with anti-rotation pins featuring external screws or plates won't work due to the ambidextrous bolt catch design. American Defense makes a low-head pin option specifically for CMC Triggers if you want to use those.
Absolutely. American Defense's proprietary ambidextrous magazine release is built into the same billet 7075-T6 aluminum as the rest of the receiver, so it's equally durable. It's a core part of the design, not an add-on, which is why it holds up better than many aftermarket ambi controls you might retrofit onto a standard lower.
The 20-degree competition-style magazine well is integrated into the receiver's profile so it aids in fast magazine changes without the bulk of protruding magwell flares. Combined with reinforcing ribs, the mag well is 40% stronger than mil-spec forged lowers, meaning you get speed and strength together without added weight.
Some anti-tilt buffer tubes with external anti-tilt lips may have interference with the dimples on the receiver's buffer threads. Before ordering one, check compatibility with the manufacturer or reach out to American Defense's support to confirm your specific buffer tube will fit.
Billet construction allows American Defense to machine the complex ambidextrous controls, tension adjustment screw, and detailed chamfers that make this lower stand out. While billet lowers are heavier than forged, this one only adds half an ounce compared to traditional mil-spec receivers, so you're getting premium design without a weight penalty.
Yes. The UIC stripped lower ships with the proprietary ambidextrous magazine release and ambidextrous bolt catch pre-installed from the factory, so you're only buying one stripped lower instead of hunting down parts separately. You'll still need to source your own FCG, buffer tube, and stock to complete the build.
| UPC | 818503016479 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AD-UICLS-BLK |
| Action | |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Model | |
| Product Type | Stripped Lower Receiver |
| Style | Stripped |
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