+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob UR-21M Color: Black, Country of Origin: USA, $2.16 Off

Special offer available for this product. Click here to see!
Limited Time Offer. Click here to see!
Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob, Black, UR-21M
Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob, Black, UR-21M
1 of 1 images
Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob, Black, UR-21M

Tap Tap to Zoom

Questions & Answers
Color:
Black

Code: 3FN-IRN-LTH44-UR-21M

MPN: UR-21M

UPC: 812058032335

List: $35.99Save $2.16
$33.83

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob

The Retro A1 Rear Sight Assembly is a high-quality, upgrade for your AR-style rifle. It features a sleek, durable design and Rapid Index Knob for easy windage adjustment,image

Specifications for Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob:

Manufacturer: Luth-AR
Color: Black
Country of Origin: USA

Package Contents:

  • Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob
  • Rapid Index Knob
  • Rear Sight Detent
  • Rear Sight Detent Spring
  • Rear Sight Aperture
  • Rear Sight Windage Screw
  • Rear Sight Base Roll Pin
  • Rear Sight Flat Spring

Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob Orderable Models

List of Orderable Models

  • Luth-AR Modern A1 Rear Base Sight Assy w/Rapidex Knob, Black, UR-21M , MPN: UR-21M , UPC: 812058032335 , Code: 3FN-IRN-LTH44-UR-21M
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-09-26 UTC.