Best Red Dot for Sub 2000

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Best Red Dot For Sub 2000

The Kel-Tec Sub 2000 is arguably one of the most popular PCC’s on the market today. It all started with the Gen 1 back in 2001, and from there has become the upgraded and reliable Gen 2 that we know today. Many PCC competition shooters love the Sub 2000 because of its weight (just 4 lbs.) and also its undeniable accuracy.

One big issue that always seems to come up, though, is that to get a good sight picture, you really have to dig your cheek into the bolt tube. This can be quite uncomfortable, especially with the recoil pounding you in the face. For this reason, many people have opted for a red dot on the Sub 2000.

When it comes to red dots, however, you’ll need an aftermarket mount. The plastic pic rail just won’t cut it when it comes to mounting an optic. Not to mention, you won’t be able to fold it if it’s mounted to the top rail. We’ll cover mount options in this article as well. For now, let’s start with what we looked for when researching the best red dot for the Sub 2000.

Must-haves in a Sub 2000 red dot

Mounting & red dot size

It was important for us to find red dot sights that would work well with the mounting systems that are currently available for the Sub 2000. Some red dots are just a bit too bulky for this particular setup. For instance, mounting an EOTech on a Sub 2K would be counterintuitive, as the whole point of the Sub 2000 is to fold up into a sleek, easily concealed package. For this reason, we kept a heavy focus on red dots that would work well with the sleekness of the Sub 2000.

Battery life

Battery life is always an important factor when selecting a red dot, especially for those who choose to keep theirs on all of the time. The last thing you want is to have to keep changing batteries all of the time, or even worse, need your firearm and the battery be dead. This is often one of the big fallbacks to the cheap, no-name red dots… the battery life on these is typically pretty bad. We look for optics that promote a battery life in excess of 1,000 hours. You can rest assured that this was no different in our hunt for the best red dot for the Sub 2000.


Obviously, price is always a factor, right? When it comes to the Sub 2000, we paid special attention to the price. This is a $400 gun (in non-pandemic times) and so we found the idea of mounting a $500 optic kind of silly… no offense if you’ve done this. Though we weren’t looking in that price range, we were looking for the best red dot for a Sub 2000, at a reasonable price. You’ll be happy to know that we found some quality optics at a much lower price point.

5 Best Red Dots for the Sub 2000

1. Sig Sauer Romeo5

The Sig Romeo5 is one of our top red dot choices for the Sub 2000. Sig is well-known for its quality firearms, and this optic is no exception. Considering not only the quality but also all of the features that you get with this optic, we’re calling this the best red dot for the price.

The construction, glass clarity, and battery life are all big selling points. It also works perfectly as a Sub 2000 red dot option, allowing you to maintain the sleek design the S2K is known for. When attached to the proper mount, the Romeo5 flips to the side perfectly to allow the Sub 2000 to fold as it was intended.

As far as co-witnessing, this, like many other red dots, is just going to sit too high above the iron sights. However, the easy-to-flip mount allows you to quickly and easily get the red dot out of the way in the event you need to resort back to your iron sights.

SIG SAUER ROMEO5 1X20mm Tactical Hunting Shooting Durable Waterproof Fogproof Illuminated 2 MOA Red...
  • 40,000+ hours of battery life
  • 2 MOA dot size
  • Auto-On/Auto-Off
  • Waterproof up to 1 meter
  • Fogproof
  • Solid aluminum construction

  • 2. Holosun HS403C

    The Holosun HS403C is another excellent choice to mount on your Kel-Tec Sub 2000. It’s comparable in size and features to the Romeo5, but with a solar strip across the top that will power your red dot, even without a battery.

    While the 403C is priced just a bit higher than some of our other top picks, we feel the solar feature makes it well worth it. The ability for this red dot to power on, even without a battery, is a huge bonus. It serves as a nice backup in the event your battery were to ever fail. This is, however, unlikely due to its 50,000-hour battery life.

    The solar feature, on top of durable construction, 12 brightness settings, and (2) mounting options, make the HS403C a top choice for your Sub 2000.

    HOLOSUN HS403C Red 2 MOA Dot Micro Sight for Rifles - Solar FailSafe Super LED Durable Waterproof...
  • Up to 50,000 hours of battery life
  • Solar failsafe option powers reticle when sunlight is present
  • 2 MOA dot size
  • 12 brightness settings, (10) daytime, (2) night vision
  • Waterproof (IP67 rating)
  • Low and high mounts included
  • Durable 6061 aluminum construction

  • 3. Vortex Crossfire

    Comparable in price to the Romeo5, the Vortex Crossfire is another excellent option for your Sub 2K. This red dot also comes in a small, sleek package that is great for maintaining concealability. The housing seems solid and should stand up to moderate use. Not to mention, Vortex is known for its outstanding customer service and lifetime warranty. *Side note – I’ve taken them up on their warranty before, and it was an exceptional experience!

    The Vortex Crossfire is said to have up to 50,000 hours of battery life, which is outstanding. It comes packed with features, including 2 Night Vision settings, turret caps that double as windage and elevation adjustment knobs, and a skeletonized high-rise mount.

    Though this red dot hasn’t seen quite the demand that the Romeo5 has, we give it two thumbs way up when it comes to red dot options for your Sub 2000.

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    4. Primary Arms Classic Series - Gen II

    Primary Arms has been a go-to site (and retail store) for firearms and accessories over the past several years. However, they’ve more recently made a huge name for themselves in the red dot market. The Primary Arms Classic Series Gen 2 comes in more on the budget side, but we think you’ll be quite impressed with the quality and features that are offered. You definitely get more than what you pay for with this red dot.

    In addition to the build quality and features, this optic makes an excellent choice to mount on your Sub 2000. It stays perfectly out of the way when attached to a folding mount, allowing you to collapse your Sub2K for easy storage.

    We’d say the biggest drawback to the Primary Arms Classic Series red dot is the battery life. Offering up to 1,000 hours puts it well below some of its competitors. That being said, the batteries used (CR2032) are fairly inexpensive and if you’re good at keeping a schedule to change them, you’ll be just fine. Overall, the positives by far outweigh this negative and we highly recommend you check this one out for your Sub2K.

    Primary Arms Classic Series Compact Red Dot Sight Gen II with Removable Mount
  • 1,000 hour battery life
  • 11 brightness settings
  • Hardcoat anodized finish on aluminum housing
  • 2 MOA dot size
  • Night vision compatible

  • 5. Bushnell TRS-25 w/ Riser

    The Bushnell TRS-25 is one of our top go-to optics for those on a very tight budget. We’ve run this red dot on anything from .22 rifles to AR’s to shotguns and have never had an issue. The TRS-25 seems to be able to handle heavy recoil with no problem. With that being said, it should do just fine on your 9mm or 40 cal. Kel-Tec Sub 2000.

    While the TRS-25 is the least expensive option on this list, the combo with the high riser will run just a few dollars more. If you opt for the TRS-25, we strongly recommend purchasing the package with the high-rise mount. This will give you both high and low-mount options. From our experience, we found the best co-witness using a higher mount.

    This red dot is not going to have all of the bells and whistles of some of the pricier options. However, if you’re looking for a quality optic at an affordable price, this red dot simply can’t be beat.

    Check out our in-depth review of the Bushnell TRS-25.

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    Mounting options

    As we mentioned prior, you’ll need a good mount if you plan to run a red dot on your Sub 2000. The plastic pic rail on top is not meant for attaching a red dot and will wear over time. A couple of different companies saw this need and created an excellent product that we’re excited to share.


    M Carbo - Kel-Tec Sub 2000 Optic MountThis company has been in the business of re-inventing stock gun parts and turning less-than-reliable firearms into tack drivers. They are well-known for manufacturing several upgrade products for the Sub 2000. I’ve purchased every single upgrade and can say with certainty… M*Carbo puts out quality products. One of their hot sellers is the Sub 2000 Optic Mount. This mount attaches to 4 existing bolts in the handguard, giving you a rock-solid mount. It flips to the side with the push of a button and exposes your iron sights or allows you to fold your Sub-2000 as you normally would.

    Midwest Industries

    Midwest Industries MIG2SUBR Kel-Tec Sub-2000 MountMidwest Industries is no stranger to the firearms and accessories community. In addition to many other quality accessories that they’ve manufactured over the years, Midwest has designed its own mount for the Sub 2000. The mount attaches to the M-Lok rail on the handguard and can easily swivel to the side to expose your iron sights. A big selling point of the Midwest Industries mount is how nicely it folds underneath the collapsed Sub 2000, taking up no additional space. The mount appears to be made of high-quality parts (6061 Aluminum) and should last for many years.

    Comparing the two mounts

    There are a couple of things that we love about the Midwest Industries mount and a couple of things that we feel the M*Carbo mount does better.

    One big plus to the Midwest mount is that it folds underneath the folded Sub 2K, between the grip and the stock. This allows you to mount a red dot without taking up any extra space when the firearm is folded. The M*Carbo mount, on the other hand, just flips to the side, making it more than double its original width.

    The Midwest Industries mount is considerably less expensive than the M*Carbo mount. That being said, we believe the M*Carbo mount is slightly superior in overall quality, design, and functionality. It flips to the side with the push of a button, whereas the Midwest Industries mount needs to be swiveled by hand. One important thing to note… For the Midwest Industries mount to fold underneath the Sub 2000, you have to attach the provided paracord to hold the charging handle back and allow clearance for the mounted red dot.

    As far as attachment, the Midwest Industries mount screws into the plastic M-Lok rail on the side. The M*Carbo mount attaches with 4 bolts to the handguard, giving it a more secure fit.

    To sum things up… If design, functionality, and durability are most important to you, we would suggest the M*Carbo mount. If sleekness, concealability, and price are more important, then we would encourage you to check out the Midwest Industries mount. Both are excellent options for your Sub 2000.


    Any of the red dots reviewed in this article would be a great option. We thoroughly researched dozens of optics and selected only the best red dots for your Sub 2000. Ultimately, it all comes down to your specific needs, budget, and what works best for you. The Sub 2K is a really unique firearm and one that we love to shoot. The addition of a quality red dot only makes it more enjoyable.

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    This Post Has 5 Comments

    1. Dom

      Well put and exatly what I was looking for

    2. Dave

      Which is the best relatively economical ($150 – $250) red dot sight that is compatible with the
      Midwest Industries MI GEN2 SUB 2000 T1/T2 Optic Mount…thanx…dave

      1. admin

        Hi Dave. Thanks for reading! While I don’t have that mount, I believe the Holosun 503 series will fit the T1/T2 footprint with the low-mount option, though it’s not advertised from what I can find. It would be at the top of that price range. Might be worth an outreach to Holosun to confirm. They’re usually pretty quick to respond.

    3. jammer

      great info that helped me choose the midwest mount for my sub2k

      1. admin

        That’s great to hear! The Midwest mount is a solid option for the Sub2K.

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