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The Luth-AR UR-01-E3-SA is a Slick Side A1 upper receiver built for folks who want the early carry-handle look done right. It's machined from 7075-T6 aluminum forgings and wears a black hardcoat anodized finish, so you get real durability underneath that vintage profile. Because it ships assembled, the A1 rear sight and ejection port cover door come already installed, which saves you a couple of steps when you're piecing together a build.
The whole appeal here is the clean side profile. This upper drops the forward assist and the shell deflector, giving you that true slick-side appearance that matches early AR-pattern rifles. The carry handle contours are shaped for the A1 rear sight housing, so the sight line and overall silhouette read as period-correct rather than a modern approximation. It's a look that collectors and retro builders chase, and one that stands out on the range or in a display rack.
Every point where other parts attach is finished to current mil-spec dimensions, so contemporary AR-15 components will drop in without a fight. One thing worth knowing before you order: this is a period-accurate upper, which means it does not have the M4-type feed ramps you'll find on most modern flattop uppers. That's by design and keeps it true to the original pattern. The charging handle is not included, so plan on sourcing one separately, along with your barrel, bolt carrier group, and handguard to finish things out.
This receiver makes a solid foundation whether you're assembling a tribute to a classic service rifle or just want a lightweight, uncluttered build for casual shooting. Dropping the forward assist and deflector shaves a little weight and cleans up the lines, and the forged 7075-T6 construction means you're not giving up strength to get the look. Pair it with a fixed A1-style stock and a pencil-profile barrel and you're well on your way to a rifle that turns heads.
No, the charging handle is sold separately on this UR-01-E3-SA model. It arrives assembled with the A1 rear sight and ejection port cover door installed, but you'll want to pick up a charging handle to complete the build. Many retro builders go with an A1-style charging handle to keep the period look consistent.
This upper is built to be period-accurate to early AR-pattern rifles, and those original receivers didn't use M4-type feed ramps. Leaving them off keeps the design true to the classic A1 configuration. If you're running a barrel with matching rifle-length feed ramps, this pairing works as intended.
Yes. Every point where other components attach is finished to current mil-spec dimensions, so contemporary AR-15 parts will fit without issues. That lets you mix modern internals with the vintage A1 exterior for a build that looks classic but runs on today's components.
Slick side refers to a receiver with no forward assist and no shell deflector, leaving a smooth, uninterrupted side profile. It's the look of the earliest AR-15 and M16 rifles before those features were added. The result is a cleaner appearance and a slight reduction in weight.
| UPC | 812058032205 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | UR-01-E3-SA |
| Action | |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Style | Assembled |
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