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.

Shopping Cart
Swampfox Sentinel II 1x20 Dot Sight
As Low As $199.00 Save Up to 13%
View Product
Compare (0)
Most Helpful Positive Review Hunter & shooting enthusiast
Well done Optics Planet. The Sentinel II arrived in only 6 days with USPS. It looks great; not even a scratch on the package. I studied it closely before purchase. The only hitch is backing out the original screws on my Springfield Hellcat.Can't do it with small tools provided. Gunsmith can with bet...
Read More...
Most Helpful Negative Review Nice sight but….
The sight looks great. Doesn’t go bright enough for daylight with snow. Shake awake is pretty rough. You really have to shake it pretty hard.
Show
Sort by
Filter by

Swampfox Fanboy for Life!

by Higgsiu, from IN, United States Written on July 18, 2026
I just received my Sentinel II green dot shipped for free from Swampfox. It's a fantastic optic. I was a happy customer of the original Sentinel green dot that I bought from Optics Planet almost 3 years ago. Just a couple weeks ago my optic went way out of zero and then died completely. I contacted Swampfox customer support and had a fantastic response. They were very courteous and supportive and approved and RMA for my 3 year old optic at their expense. They then gave me 100% credit toward a brand new Sentinel II and shipped that to me for free. What a great company. They earned a customer for life in me!
Would recommend: Yes
Was it helpful to you? Yes | No

Green-dot's �

by Tanner Williams, Verified Owner from AZ, United States Written on June 24, 2026
Awesome ��!!! I recommend SwampFox for sure. I've had the SwampFox Liberty1 for 4 years and I've had the Sentinel2 for about 2 years. I've had Zero issue's.
Pros:
  • Everything.
Cons:
  • N/A
Best Used for:
  • EDC
Would recommend: Yes
Was it helpful to you? Yes | No

Eric M. Colorado

by Eric M., Verified Owner from CO, United States Written on October 29, 2025
Great optic for a fraction of the price. Don't be confused though build quality seems right on par with all the heavy hitters in the industry. Haven't had a chance to put anything down range yet but having the ability to co-witness with the optional rear sight I know I'm at least on paper at 15 yds.
Pros:
  • Price point
  • Shake awake
  • Robust build
  • common RMSc footprint
  • co- witness option
Cons:
  • Made in China
  • have to remove sight for battery
  • slight bloom on higher settings
Best Used for:
  • small framed concealed carry
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Low Quality and Unreliable

by Evan, Verified Owner from WI, United States Written on May 9, 2025
I've had three of these dots, all of them had issues in under a year and less than 1,000 rounds. I carried one for everyday for almost a year straight, it held zero very well, the green dot was decently crisp and round. The finish on the metal differed drastically between all three of them straight out of the box. The glass coating differed between them as well. The shake awake is hit or miss, requiring violent shaking to turn on, if it turns on at all. There are higher quality dots for less money, I do not recommend buying this dot. DO NOT CARRY THIS DOT.
Pros:
  • Holds zero
Cons:
  • Unreliable
Best Used for:
  • Safe queen
Would recommend: No
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Swampfox Sentinel II 1x20 Dot Sight (Green)

by Roke, Verified Owner from GU, United States Written on November 3, 2024
Currently running a Swampfox Sentinel II on my P365 X Macro with the Ironsides Stainless Steel Shields and first thing you notice about it, is how aesthetically pleasing the optic looks paired with the shield. It looks and feels robust. Easy installation. Fired off 500+ rds and the optic and shield remains intact. This is a stellar beginner friendly optic that was easy to install. The dot is crisp and easy to find on target. The shake to wake is extremely effective when unholstering. I'd say the only downside is having to uninstall the optic to change the battery, but other than that, it functions as advertised. One thing to keep in mind: if you intend on running the back up iron sights, you might have to swap out your front sight for something taller to be able to co-witness.
Pros:
  • easy installation
  • Crisp dots, well made, good adjustable brightness, uses a fairly common button battery, holds zero solid.
Cons:
  • bottom loaded battery
Best Used for:
  • concealed carry all year
  • EDC & range
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

My EDC Optic

by Retired AF MSgt, Verified Owner from TX, United States Written on October 12, 2024
This is my first Swampfox product. I was hesitant in my decision to purchase it because I couldn’t find enough reviews, but so far, this has been a pretty nice red dot. I love the design. It has a modern look to it and it feels durable. I mounted this site on my Ruger Max 9 and it fits like a glove. Although the battery is bottom mounted, it’s not an issue for me. I like the fact it has an option to add the rear site in front of the optic. It’s a good backup if the battery dies. The 3 MOA seems pretty typical and it looks clear. It seems to have all the hardware needed to mount it to your gun. No complaints as of now.
Pros:
  • good quality
Cons:
  • None
Best Used for:
  • EDC
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Swampfox Sentinel II 1x20 Red Dot sight

by Rodan, Verified Owner from TX, United States Written on October 9, 2024
Great red dot! This product was reviewed in an article comparing top name red dots sight to economical red dots. the review directed me to Optics Planet and have purchased several items from company.

Mounting was easy, and did not have to adjust the sight once installed and have put 100 rounds through the pistol with sight installed.

Use: no issues with the shake and wake feature, turning on and off is very easy, and very happy with this product, and will look for more Swampfox products in the near future when needed.

Optics Planet Customer Service: Great and consistent; I called this order in and went smoothly, no issues.
Pros:
  • function and price
Cons:
  • Not at this time
Best Used for:
  • Compact 9mm
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

amazing quality at decent price

by Jason Driggers, Verified Owner from FL, United States Written on September 30, 2024
Great packaging very upscale full color instructions, even came with picatinny adapter. Easy to install
Would recommend: Yes
3 of 3 found the following review helpful.
Was it helpful to you? Yes | No

Decent Optic

by Joe M, Verified Owner from SC, United States Written on September 26, 2024
Overall I like this optic and its features for the price. Shake awake is important feature to me. Having the ability to mount a rear site turns out to be a nice feature that I've not seen on other optics. Only issue is that the battery compartment is on the bottom so you'd need to take the optic off to replace the battery, then remount and re-zero it. Guess this is the one compromise for an optic at its price point.
Pros:
  • Price
  • Large Window
  • Shake awake
  • Clear window
Cons:
  • Battery location
Would recommend: Yes
3 of 3 found the following review helpful.
Was it helpful to you? Yes | No

Swampfox Sentinel 2

by Morris Lowery, Verified Owner from NJ, United States Written on September 26, 2024
Love my Swampfox Sentinel2 it fits my Hellcat OSP with out a plate Great Great fit
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?
Last updated 2026-08-03 UTC.