What is Shield RMSx XL?
Shield RMSx reflex red dot is the newest sight for competitive shooters with an 80% larger lens than RMS sights made by the same company.
Interested in RMSx XL?



Shield RMSx (Reflex Mini-Sight Dot XL Lens) (image source: Shield Sights red dot)
Where are Shield optics made?
Shield Sights is a specialized maker of red dots from Dorset, UK. Even though the family-run company has long branched out to military and law enforcement use, Shield Sights is best known for top-notch sights for practical shooting.
John and Jeremy White, the father and son duo at the helm of the company, are very active IPSC shooters themselves.
80% Larger Lens on Shield RMSx
- red – dot made out of aircraft-grade aluminum
- small, precision built red dot
- hard dip-coated acrylic lens on red dot
- 9 color options on red dot
The selling point of Shield RMSx MOA red dot is the generous lens size, which that is 80% larger than what other Mini Sights from Shield ( Shield RMSc sights and SMS sights ) have to offer.



Shield RMSx – 80% bigger lens than regular RMS red dot (image source: Shield Sights)
Shield RMSx review
With Shield RMSx reflex mini sight, competitive shooters will be able to find the dot faster than before. Thanks to the bigger glass surface, you’ll also be able to stay with the dot mid-recoil.
This will significantly cut down on shot-to-shot time and allow you to complete the IPSC course faster.



Shield RMSx (Reflex Mini-Sight XL Lens) (image source: Shield Sights)
Beyond the larger glass-to-metal ratio, Shield RMSx red dot follows the same design blueprint. The sight is very compact, made of aero-grade aluminum.
The sight weights only 17.5 grams (0.61 ounces) but is very sturdy. It can be fitted onto handguns, pistols and even AR-15s rifle.
The standard RMSx reflex mini sight housing comes in matte black finish, but there’s 9 color options in total to choose from.



Shield RMSx reflex mini sight – 9 Color Options (image source: Shield Sights reflex mini sights)
9 colors:
- Amber Yellow sight
- Bordeaux Red sight
- Signal Violet sight
- Electric Blue sight
- British Racing Green sight
- Bronze sight
- Silver sight
- Gun Metal Grey sight
- Black Matte sight
Shield RMSx Footprint



Shield RMSx (Reflex Mini-Sight XL Lens) – Footprint (image source: Optics Trade)
Shield RMSx reflex mini sight uses the Shield mounting standard. It’s very similar to the well-known Docter/Noblex red dot design but optimized to fit the compact size of RMS red dot and SMS red dot. If you want to know more about footprint on RMSx read our blog post Shield RMSx Footprint.
Shield makes over 40 mounts for mini sight models so you’ll find the perfect match, no problem.
Want to know more about footprints on red dots?



Shield RMSx (Reflex Mini-Sight XL Lens) (image source: Shield Sights)
Shield RMSx Mini Sight Compact Dot | IWA 2022 Report
Optics Trade visited Shield Sights’ exhibition booth at 2022 IWA OutdoorClassics. In this video there is everything you need to know about Shield RMSx Red Dot Sight!
Watch our video on Shield RMSx below
Clear View on Shield optics
- hard dip-coated acrylic lens on red dot
- 4 MOA dot, 8 MOA dot
- true no magnification
- red LED → sights are NV-compatible & day-bright
The view through RMSx reflex mini sight will have you thinking the optic is missing the lens. It really feels like looking though nothing at all. The sights are just that good; there is absolutely no glass tint or magnification.



Shield RMSx (Reflex Mini-Sight XL Lens) (image source: Shield Sights)
Shield RMSx compact reflex mini sight is available in 2 dot sizes – 4 MOA and 8 MOA. The inobstructive light-emitting diode is so small but powerful.
The crisp red dot is visible against the sky in bright daylight. Shield RMSx red dot has an automatic light adjustment and is perfect for all lighting conditions. You can also use it with night vision optics.
Shield RMSx battery life
Shield RMSx mini sight compact runs on a single CR2032 battery coin. It will last you for 1-2 years. When replacing the battery, the sight has to be removed from the weapon.



Shield RMSx (Reflex Mini-Sight XL Lens) (image source: Shield Sights)
RMSx Compact Reflex Mini sight Specifications
Shield RMSx Red Dot Sight | |
Magnification: | 1x (no magnification) |
Dot size: | 4 MOA or 8 MOA |
Material: | aluminum, acrylic |
Size: | 42 x 34 x 23 mm1.7 x 1.4 x 0.9 inches |
Weight: | 17.5 grams
0.61 ounces |
Battery: | CR2032 coin |
Battery life: | 1-2 years (average use)
3 years (dark storage) |
Warranty: | 2 years |
Made in: | United Kingdom |
What’s in the Box?
The small product box is filled to the brim with all the necessary mounting accessories and a few goodies for good measure.
- Shield RMSx red dot
- CR2032 battery
- minidial disc
- four M4x8mm screws
- hex wrench tool 1.5mm
- hex wrench tool 2.5mm
- shim plate
- QR code manual card
- Shield logo stickers



Shield RMSx (Reflex Mini-Sight XL Lens) (image source: Shield Sights)
Warranty on Shield RMSx reflex red dot
Shield RMSx sight is manufactured in England. They only give 2 years of warranty on their products (or a lifetime warranty, if you’re in the US).
Interested in RMSx XL?
But Shield optics are very reliable and the post-sale communication with the company is easy. We can attest to their great customer care. Should anything happen down the line, the manufacturer will fix the issue to customer’s satisfaction.
Shield RMSx reflex mini sight price
Shield RMSx red dot can be yours for €489.00 (or $489.00, without VAT).
Image Gallery






What is the screen size?
The screen size of RMSx is 34×22 mm.
Hello,
I saw your photos of the RMSx on a Bullesteros.
Does the mount attach to the dovetail ? Or do you have to thread the gun ?
Kind Regards,
Alexandre
Unfortunately, I have not seen that setup in person. I advise you to contact the manufacturer of the gun or Shield.
Hello,
I also saw the RMSX with glass, does the glass have an advantage over the acrylic glass?
The main advantage of the acrylic lens are its shock resistance and light transmission. Glass is better in terms of scratch resistance, can withstand higher temperatures, and is easier to clean.