Best Optics For PS90 – Reviews w/FAQs

FN PS90 is a weapon used in many secret service organization and govt military. In a sense it’s an upgraded version of the world famous P90. The gun that is also being used in the game Counter Strike Global Offensive. It’s a great gun for sure. It’s not long-range weapon.

That’s why a red dot/holographic sight will do better than a riflescope for PS90. There are tons of well-made sights available to choose from. How do you choose the right one? And how do you determine which is the best optic for PS90? Don’t worry, your questions will be answered in time. Sit down, relax and enjoy the read.

1. Vortex Optics Venom Red Dot Sight


Vortex is dominating sights game for PS90. Fun fact, P90 sights work on PS90 as well. I mean it’s kinda obvious. Vortex used to make solid sights for the P90 as well. Now those optics are also being used with FN PS90.

The Lens

It’s a single glass design with no prism involved. The glass is fully multi-coated with scratch resistance coating and brightness coating. Everything seen through the sight looks clear and color accuracy is quite insane as well.

Illuminated Reticle

Illuminated reticle has adjustable brightness setting. There are two buttons on the left side of the sight. Using those you can increase or decrease the brightness of the sight.

Build Quality

The lens on the sight is installed with O-ring sealing. Water or moisture won’t go inside the sight at all. There is O-rings on the battery compartment and windage/elevation knob as well. Vortex thought this through.

The Cons

The battery life could have been better. But when this sight came out, 50k hours battery life wasn’t the norm.

2. HOLOSUN – HS510C Reflex Sight for Longer Barrels


HOLOSUN makes red dot sight for rifles and pistols. The one here is made for rifles. It’s a reflex red dot sight with unlimited eye relief.

Mounting System

It uses QD mounting clips to mount on top of the picatinny rail. It’s quite sturdy and sits their tightly. Although I would love to have something more regular. This is fine.

Illuminated Reticle

The multiple layer reticle is illuminated. You can choose from the 2 MOA red dot in the center or the spread out 65 MOA circle around the center. Both of them illuminate with a CR2032 battery.

Battery Life

The battery life of this sight is insanely amazing. It can last up to 50k hours. That’s huge. You don’t need to worry about changing the battery any time soon.

Sunlight Failsafe

This is an excellent feature. It makes the sight go to sleep mode when there is no bright sunlight around it and it will automatically max the brightness under bright light. You can also turn on the sight by shaking the gun around a bit.

The Bad Stuff

The mounting system is not the best. It’s quite tricky to make it sit right. But once you do, you don’t need to worry about it falling out of the gun at all.

3. Burris FastFire Reflex Red Dot Sight for PS90


Burris makes great scope and red dot sights. Their FastFire reflex sight is a wonderful addition to that collection. It’s a picatinny rail mounted sight that can be used with spotting scopes or shotguns as well. But we are going to use it with a P90/PS90.

Good Things About Fastfire 3

It’s a reflex sight with parallax free and 1x magnification. You don’t need to worry about setting it up every time or find out your dominant eyes to hunt better. You can keep both of your eyes open while using this sight. It won’t matter really.

Easy To Tune

The optic is super easy to tune. Windage and elevation knobs are super easy to adjust. You don’t need to spend much time behind fixing the windage and elevation.

Build Quality

The sight is water and fog proof. The glass is also multi-coated with different chemicals. Cleaning the glass is quite easy. As dust don’t stick around there much.

Manual/Automatic Brightness Setting

You can choose from either of these two. With manual setting, you will have 3 levels brightness adjustments. With automatic setting, the brightness will increase depending on the environment.

Keep That in Mind

The brightness setting could have had some more tweaking. It works fine, but would have worked better with more brightness.

4. Vortex Optics Strikefire II Red Dot Sight


Vortex Strikefire II is another 1x red dot sight. Instead of using a single glass setup like other red dot sights, it looks like a scope and performs quite similar as well. There is a prism inside of the housing that amplifies the photos seen through objective lens.

Build Quality

The build quality is quite good on this sight. It’s not too heavy not too light. Balanced weight distribution and good exterior coating. The coating didn’t seem to wear off anytime soon. It’s waterproof and the inside is nitrogen purged. Moistures can’t stay inside so no fogs.

Illuminated Reticle

It has 11 adjustable brightness setting in the optic. you can increase or decrease the brightness with the help of buttons on the side. The button feels quite mushy but they work. It’s a standard red dot reticle. Nothing fancy going on here.

Cantilever Is Included

If you want to use magnifier with this red dot, you can use the cantilever mount instead of the stock mount.

What Should Be!

Windage and elevation turrets should have been more pronounced. It’s usable, but it’s quite hard to work with them with one hand.

Read More: Ruger 57 | Sig P320 | Sig P365 XL | Stribog | S&W Victory

5. EOTECH 512 Holographic Weapon Sight


EOTECH 512 is the most holography sight looking holography sight. I know that doesn’t make any sense, but that design of the holographic sight is one of the most used ones in video games and other media outlets.

Build Quality

Construction of this sight is quite interesting. It uses both plastic composite and aluminum in the same sight. It’s not the first time someone did that. The weight balance on this sight is quite satisfying. Despite having a long nose where the battery is held, it’s quite hollow to keep the balance.

Illuminated Reticle

The 1 MOA red dot is for the people that likes to target dead center always. Otherwise, you could also work with the 68 MOA circle around the red dot.

There is total 20 adjustable brightness setting available in this optic. 20 is not a small number. The reticle gets quite bright during the day time.

Never Out Of Fight

Even if a part of the glass is destroyed or blocked by something. You can still use the sight with precision. You will need two AAA batteries to power up the red dot sight. those battery fills in the hollow cavity of the sight.

EOTECH 512 Holographic Weapon Sight
  • Adjustable Brightness - The 512 has 20 brightness settings for use in any lighting scenario

Doesn’t Support Night Vision!

It’s one of the very few holographic sight from EOTECH that doesn’t support night vision. It’s a shame, but we can’t have everything at once I guess.

6. AT3 Tactical RD-50 PRO Red Dot Sight

AT3 Tactical RD-50 Pro is a red dot sight with elevated mounting system. It uses riser absolute cowitness to increase the height of the sight. Some people likes this, some don’t. But it’s there and it’s convenient.

On Point Reticle

The 2 MOA red dot reticle is accurate, crisp, and quite bright. There is 11 adjustable brightness level that you can play around with. Find the optimal brightness setting for you and set that as your daily driver.

Optics Quality

The lens on this sight is multi-coated with scratch resistance coating. It also uses amber lens which produces better color accurate images. You will see targets more easily and clearly.

Build Quality

Made from waterproof, the housing is sealed to make sure it’s waterproof. To bold the claim further, AT3 will provide a lifetime warranty as well. The circuitry inside is shockproof. You are more than welcome to go rough with this sight.

What’s Nitpicking!

Riser mount is not everyone’s cup of tea. Then again, most people loves the riser mount. I do too. It’s nothing but nitpicking.

7. Vortex Spitfire HD Gen II Red Dot Prism Scopes


Vortex Spitfire HD gen II is a 3x optics with BDC4 reticle. The reticle is calibrated up to 600 yards out of the box. Of course, PS90 is not capable of firing that far with 100% accuracy. But it’s good to know a 3x sight can fire that long.


Tuning the sight is super easy. The windage and elevation dials are located in the side and the top. You can easily change them to your need. 1 click = 1 MOA movement.

There is also a ring around the eyepiece that you can move around to focus the reticle. Brightness setting buttons are on the left side of the sight.

Illuminated Reticle

The red color BDC4 reticle is illuminated. It’s not illuminated enough to hunt at night, but it’s fairly bright. You can choose from 12 adjustment levels.

Build Quality

Housing of this red dot is constructed from aluminum. It’s durable and waterproof. The inside is nitrogen purged to make it fog proof. It’s sturdy enough the internals from shock.

Careful with The Turrets!

The adjustment might be a bit hard for newbies. It’s easy enough to do, but you will need to be careful while playing with the turrets.

How To Choose a Sight For PS90

There are so many good options available for this gun, it’s unbelievable. Don’t worry, it’s not rocket science. You will need to clarify your needs and then take the sight that matches with your needs.

Build quality. PS90 is an incredible gun with extremely durable combat ready body. If the optic isn’t made from quite similar material, it may not last as long as we would like to. That’s why, grabbing a sight with good longevity is essential. Good build quality ensures longevity.

Optics quality. I cannot stretch this issue enough. Lens is your second eye. If the eye isn’t good, it won’t provide good vision. That would be bad to say the least. Lenses should have a decent amount of coating. That way it can generate clear pictures.

Battery life. Red dot sights will have illumination. To illuminate the reticle, you will need to use batteries. When it involves batteries, the concern about battery life comes in to mind. Most sight will provide an incredible battery life with the included battery. I wouldn’t be too concerned about this. But it’s something to keep on mind.

Warranty varies highly from company to company. Everyone doesn’t have the same policy nor do they like to copy others. Some companies will provide incredible warranties while some struggle to provide good after sale service.

It all depends on the experience of the company. Take something that has good reputation in the market and has a decent warranty to back up the claims of the manufacturer.

Frequently ASKED Questions

What Is Design Machine PS90?

Design machine is an US based vendor that makes red dot sights for our beloved PS90. They take custom order based on your requirements. Depending on your needs, the Design Machine PS90 mount will vary as well. you could directly mount it on the PS90 or on top of an installed optic.

P90 vs PS90

Secret service P90 is one of the most loved blowback rifles on the market. It gained so much attraction and love it was unbelievable. FN PS90 is sort of homage to that P90 rifle and improved edition as well. PS90 is also quite bigger and sturdier. Firing mechanism and the bullet chamber was improved significantly as well.

Ultimately, you can say PS90 is the upgraded P90. H&K P90, FN P90, FN PS90, different names but similar guns.

Can P90 Sights Work In PS90?

Yes, they certainly can. Both of them shares the same mounting rail. On top of that, you could install a different mounting bracket and use any optics as you wish. I see no reasons for P90 sights not working PS90.

Bottom Line

It’s not easy to success a gun like the P90. But PS90 is quite solid. I really loved how there are so many sights available for both P90 and PS90. You just cannot help but mention the P90 every time you talk about PS90.

My inner CS fanboy was screaming quite hard writing this review. Afterall, P90 is a busted gun in that game. Anyway, enough talk about games, we were here to talk about the best sights for PS90. We did just that. If you still want to know more, don’t hesitate to ask. Thanks for reading, see you next time.

Sights: 44 Magnum | Ak Ultimak | Benelli M4 | Beretta APX | Beretta 92FS | Beretta NEOS | Browning Buckmark | Canik Mete | Canik TP9 Elite SC | Canik TP9SFX | CX4 Storm | FN 509 Tactical | FNX 45 Tactical | Galil ACE | Glock MOS | Hellcat | H&K MP5 | H&K VP9 | Kel-Tec Sub 2000 | Kel-Tec KSG | Kriss Vector | Micro Roni | Ruger 57 | Ruger Mark III | Ruger Mark IV | Ruger PC Carbine | Scorpion Evo | Sig MPX | Sig P320 | Sig P365 XL | Stribog | S&W Victory | Tavor X95 | Walther PDP

Scopes & Sights:- 11.5 SBR | 300 Blackout | M4 | MK18 | Ruger Charger | S&W M&P 15 Sport 2

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