Luth-AR A1 Rear Sight Assembly - UR-21A
Save 5% MSRP: $22.99$21.95
In stock
Give your modern AR-15 / M16A1 that retro look and feel with the Luth-AR A1 Rear Sight Assembly
Manufacturer Number: UR-21A
Material: Steel
Finish: Matte Black
Kit Includes:
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UR-09-E3 Rear Sight Windage Drum
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UR-10-E3 Rear Base Spring Pin
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UR-13-E3 Rear Sight Aperture A1
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UR-11-E3 Rear Sight Detent
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UR-12-E3 Detent Spring
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UR-14-E3 Rear Sight Windage Screw
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UR-28 Rear Sight Flat Spring
| Weight | 0.16 oz |
|---|---|
| Dimensions | 5.5 × 2 × 1 in |
| MPN | UR-21A |
| UPC | 859992007135 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Perfect Match!
Great looking A1 Rear Sight Assembly Kit. This one has 33 available clicks on the windage drum, which is correct according to the U.S. Army manual, TM23-9 instructions for setting the mechanical zero on an A1 rifle on page G-13. Center should be 17 clicks from aperture being all the way to the left side. This assembly completed my upper receiver build for a 653-retro carbine, with all the parts coming from AR15 Discounts, including a stripped upper receiver, ejection port cover, teardrop forward assist and this Luth-AR A1 Rear sight Assembly Kit. Everything matched beautifully and fit together perfectly, not to mention the great prices on everything! Thanks, AR15 Discounts, I love it!
USNice rear sight parts for an A1 Build.
This set fit perfectly on my A1 Upper and I am very happy with the quality.
USLuth-AR A1 Rear Sight Assembly
used it on the M16A1 Stripped Upper Receiver - M4 Feed ramps, fit perfect for my retro build
USLooks good!
The installation was fairly easy, but you really need a second set of hands to dress the sight wheel while installing the roll pin.
USWorks great
Installed this in my NDS receiver. Fit is tight and I can wait to take it out.
