Search  for anything...

ADE Advanced Optics Crusader RD3-009 Red Dot Reflex Sight – with Mouting Plate for 1911 with Colt G.I Standard Rear Sight and Picatinny Rail – 5 MOA Reflex – Waterproof, Shockproof & Fog Resistant

  • Based on 62 reviews
Condition: New
Checking for the best price...
$84.99 Why this price?
Save $65.00 was $149.99

Buy Now, Pay Later


As low as $14.17 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Ade Advanced Optics Inc

Arrives Sunday, Oct 11
Order within 2 hours and 31 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • COMPATIBLE WITH 1911 STANDARD AND PICATINNY RAILS Includes a mounting plate for 1911 with Colt G.I Standard Rear Sight and a universal Picatinny adapter. To use, remove your rear sight, replace with this plate securely, and attach the optic for a firm, reliable connection every time.
  • ENHANCE AIMING PRECISION WITH EVERY SHOT The RD3-009 delivers a sharp 5 MOA red dot with five illumination levels for quick target acquisition and steady aim. Mount the optic, power on, and center the dot for fast, accurate alignment during practice or defense.
  • BUILT TO HANDLE RECOIL AND FIELD USE Constructed to endure heavy recoil, the durable reflex optic is shockproof, waterproof, and fog resistant. Simply sight in once, tighten the screws, and rely on its rugged build to maintain zero through every range session.
  • EASY WINDAGE, ELEVATION, AND BRIGHTNESS ADJUSTMENTS Fine-tune your aim with tactile controls and five brightness settings to match any lighting. After installation, adjust windage and elevation until the red dot aligns naturally with your target for consistent accuracy.
  • LONG-LASTING BATTERY WITH MOTION AWAKE TECHNOLOGY Powered by a CR2032 lithium battery (included) for extended operation. The Shake Awake feature conserves battery life by powering down when inactive and instantly reactivating upon movement. This advanced red dot optic ensures instant readiness, making it an excellent choice for tactical and sport shooting.

Description

What is included in this package? : This combo package includes the ADE RD3-009 Crusader red dot (Doctor footprint), a Pi mounting plate, and a rear-sight replacement optic plate for compatible Taurus models. Which 1911 pistol models does the included optic plate fit? This red dot mounting plate is specifically designed for 1911 pistols equipped with the Colt Government (G.I.) standard rear sight Will this plate fit Optic-Ready pistols ? No, this plate is designed only for Non-Optic-Ready 1911 pistols and replaces the factory rear sight rather than fitting factory optic cuts. The included red dot, will fit any model with a Doctor footprint optic cut What footprint does the ADE RD3-009 Crusader use? The RD3-009 uses the Doctor footprint, which is compatible with Venom/FastFire I, II, III and other Doctor-pattern mounts or cuts. How do I replace the battery and how long does it last? Top-load battery compartment, no need to remove the sight from the platform to change battery. No need to re-zero. ADE 009+F1 Plate Plate Only ADE 009+Novak Plate ADE 006+B1 Plate ADE 006+Novak Plate ADE 015+B1 Plate ADE 015+B1 Plate Founded in 2010 in Oregon City, Oregon, ADE Advanced Optics delivers leading-quality products at manufacturer-direct price. Built by experienced optical engineers, our optics are developed through real customer feedback and real-world testing. Every product is designed for durability, precision, and practical performance—bringing advanced technology within reach of everyday shooters. ADE Advanced Optics—Practical Innovation. Proven Performance. Secure your optics with ADE's engineered mounting plates, built for accuracy and durability.

Brand: Ade Advanced Optics


Color: Red


Style: Modern


Sport: Hunting


Material: Metal or Robust Polymer Plastic


Magnification Minimum: 1 x


Compatible Devices: Handgun


Mounting Type: Picatinny Mount


Thread Type: Picatinny


Model Name: Crusader RD3-009


Magnification Minimum: 1 x


Compatible Devices: Handgun


Mounting Type: Picatinny Mount


Thread Type: Picatinny


Reticle Type: Red Dot


Color: Red


Product Style: Modern


Lens Color: Red


Material Type: Metal or Robust Polymer Plastic


Brand Name: Ade Advanced Optics


Sport Type: Hunting


Model Name: Crusader RD3-009


Manufacturer: Ade Advanced Optics


Number of Items: 1


Unit Count: 1 Count


Manufacturer Part Number: RD3-009+B2


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Oct 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Not for Kimber Customer 2
Very good quality. Packaged well. Delivered quickly. Unfortunately would not work on my Kimber. Ordered the ADE base for a different dovetail but still wouldn’t work on the Kimber. Very sad about that! Not the product’s fault!!! Added this set up to my Dad’s Sig Sauer instead and it works awesome!! Highly recommend this sight for a high quality budget red dot!!! ... show more
Reviewed in the United States on January 5, 2025 by Bill M.

  • Easy install
Super easy to install. Hardest part was getting the factory sight out
Reviewed in the United States on September 5, 2026 by Tom

  • Fell Off
Took a lot of filing to get the base to fit in the rear sight, put 40 rounds through and it flew off and hit me square in the nose, When it worked it works good for the price, need to make some modifications, longer screws and lock tight , then give it another try.
Reviewed in the United States on August 18, 2024 by Kenny

  • Windage does not work
So I wish I could like this sight. The windage dial does not change anything at all. I have a laser on my pistol that is sighted correctly so I can turn it on and compare the change in windage/elevation relative to the laser. The elevation seems to work okay (at least it moves) even though I need a shim to cant it enough to be accurate, but the windage does nothing. I have tried multiple times & multiple ways to contact ADE Optics about this issue but cannot find any way to do so. Their phone number listed doesn’t work, the website on Amazon “contact info” doesn’t work, typing in their website won’t load, and I can’t find an email address for them. I would just return it, but I had to modify the dovetail that came with it to fit my Girsan 1911’s rear dovetail & it took me so long to get it on there correctly that I’m not taking it off. At least I got a baseplate out of this…. I guess. I just bought a vortex venom instead, since it uses the same base footprint. Since I’m keeping this sight I would like for it to function because I have other firearms I could mount it to, but alas, if I can’t get ahold of their customer service it will probably end up in the garbage. ... show more
Reviewed in the United States on December 9, 2023 by Gus Farmer

  • Great red dot. Bad optic mount
5 stars for the ade red dot! I have this same model on all my pistols and it has always been great. I dont normally write reviews, but felt the need to share that this 1911 mount was complete crap. It is wider than the original rear dovetail sight which forces you to file it down and requires excess gun lube and a sight pushing tool. (Which it actually dented the sight pusher a bit when you use some force). Didn’t want to deal with the extra work to make it fit and nor should I had to as it should’ve been plug and play. Went ahead and just ordered the egw 1911 optic mount and was able to install it on the first attempt. Moral of the story, you get what you pay for. ... show more
Reviewed in the United States on April 17, 2025 by Bobby

  • Excellent quality
Will recomend this to others. Excellent quality.
Reviewed in the United States on September 19, 2025 by office144

  • Glass breaks just from regular use
Worked well for the first 500 rounds, it was pretty accurate. Then the glass broke just from shooting. I tried contacting the company directly but no response. If you’re willing to spend $80 on a sight, I’d just save time and go a step further and get one that’s a little more expensive.
Reviewed in the United States on June 18, 2026 by Amazon Customer

  • Worked for my application.
Its a little big, but it works. The screen reads clean with minimal splash in the dot.
Reviewed in the United States on March 10, 2026 by Austin

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...