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AR-15 Adjustable Rear Sight Assembly Black
AR-15 Adjustable Rear Sight Assembly Black
AR-15 Adjustable Rear Sight Assembly Black
AR-15 Adjustable Rear Sight Assembly Black
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LUTH-AR LLC - AR-15 Adjustable Rear Sight Assembly Black

73 Reviews
AR-15 Adjustable Rear Sight Assembly Black
Brownells #
100024755
MFR #
UR-21A
UPC
$24.69
Coupon Code
Purchase Limit Help

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Specifications
Item Weight (lbs):
0.450
Item Length (Inches):
1.000
Color:
Black
Item Height (Inches):
0.500
Make Model Fit:
AR-15.Universal
Item Width (Inches):
1.000
Restriction
Gun Part Restrictions:
Yes
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What is the LUTH-AR LLC - AR-15 Adjustable Rear Sight Assembly Black?

The Luth-AR AR-15 A1 Rear Sight Assembly adds that extra touch of authenticity to your retro build. It is designed to look and act the part of the original-style rear sight on your reproduction AR-15 / M16A1. While the modern AR offers various improvements there’s nothing wrong with having an appreciation for Eugene Stoner’s original design. The Luth-AR reproduction A1 Rear Sight Assembly features all-steel construction and non-reflective a matte black finish. It includes the aperture, windage drum, detent, detent spring, windage screw, and roll pin, so it is ready to install on your next build - or to give an existing rifle a different look.

The A1 rear sight features two apertures, one unmarked, for closer targets, and one marked "L" for long range.

See all of our AR15s and AR15 parts here.

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Gun Parts have restricted shipping to CA.

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AR-15 A1 REAR SIGHT ASSEMBLY REVIEWS

3.1
73 Reviews
5 Stars
36%
4 Stars
11%
3 Stars
14%
2 Stars
8%
1 Stars
32%
Reviews Summary
The Luth AR-15 A1 Rear Sight Assembly has garnered mixed feedback from users, with many praising its classic aesthetics and fit while others lament issues with installation, poor quality control, and difficult adjustments. Overall, it suits retro builds, but buyers should be prepared for potential installation challenges and quality variability.
What Reviewers Are Saying
Installation Issues
75%
Many reviewers highlight difficulties during installation, primarily due to misaligned screws and tight fits. Some users report having to resort to additional tools or modifications to make the sight work with their uppers, causing frustration.
Quality Control
70%
Numerous reviews mention varying quality in the rear sight assemblies, noting issues like poorly machined apertures, excessive burrs, and components that do not fit together smoothly. This inconsistency has led to many dissatisfied customers who received defective units.
Product Functionality
60%
Despite the installation challenges, several users appreciate that once installed, the sight functions well for their intended purpose. Positive comments focus on its accuracy and reliability in sighting when properly fitted, though this may require significant effort.
Aesthetic Appeal
50%
Reviewers frequently mention the sight's classic look and compatibility with retro builds, suggesting that while the product may have functional issues, its appearance and design are up to par with original specifications, adding to its appeal for enthusiasts.
Value for Money
45%
While the pricing of the Luth AR rear sight assembly is generally seen as affordable compared to surplus options, reviews suggest that buyers may end up needing to invest time and effort into making it work, leading to mixed perceptions about its value.
Customer Photos & Videos
5
A1 Sight Kit
Quality A1rear sight kit at a good price. But I do dread having to install the 1/16” x 1/4” pin.
Would you recommend this? Yes, I would recommend to a friend
by MARCUS HEURTEVANT on September 04, 2025
Verified Purchase
Was this review helpful? 4
5
Perfect fit on my M16A1 Stripped Upper Receiver
The rear sight is a identical copy of the M16A1 sight I had on my M16 that I was issued back in '81.This sight went on my DirtyBird upper that I'm using for a clone build. The sight has the same size aperture holes with one of them being raised (marked L) for longer distances beyond 300m. Overall build quality is very good.
Would you recommend this? Yes, I would recommend to a friend
by BENNY CASILLAS on July 10, 2025
Verified Purchase
Was this review helpful? 5
5
No Problems...
I'm not sure what the complaints are about unless there was a bad batch of sights floating around. This installed just like every A1 sight I've installed in the last 35-40 years.
Would you recommend this? Yes, I would recommend to a friend
by THOMAS GRIFFITHS on February 02, 2025
Verified Purchase
Was this review helpful? 4
5
Had to return it
The sight was fine however it arrived with no detent pin. Had to return it.
by JAZZVERSO MILLER-HAYES on February 01, 2025
Verified Purchase
Was this review helpful? 1
5
Works well in the C7 stripped upper
Fit right into the Brownells C7 Stripped upper they offer. Video online taking you step by step thru installation process.
Would you recommend this? Yes, I would recommend to a friend
by RUSSEL DOVE on July 11, 2024
Verified Purchase
Was this review helpful? 2
View All 73 Reviews
Customer Questions
0 Questions