Are you the owner of a Springfield Armory Hellcat OSP, RDP, or PRO and wondering which Holosun red dots will co-witness with your standard height iron sights? Look no further! In this guide, we'll break down exactly how each Holosun red dot lines up with the Hellcat's iron sights, helping you make an informed decision on which optic to choose.
Before we dive into the specifics, be sure to check out our detailed fitment guide, which covers all the red dots we’ll discuss and any adapter plates you may need for a perfect setup. Let's get started!
Adapter Plates Used
he Springfield Armory Hellcat features an RMSc footprint, meaning you’ll need an adapter plate for any Holosun red dot, as Holosun optics use a modified RMSc footprint without rear lugs.
Curious about the differences between RMSc and modified RMSc footprints? You can dive deeper into this topic by checking out our article on the Hellcat footprint. But for now, let’s focus on how each Holosun optic co-witnesses with your Hellcat.
For this co-witness test, we used adapter plates from three manufacturers: CHPWS, Calculated Kinetics, and DPP. To achieve the best co-witness, we chose the thinnest option available, which is from DPP. If you want to explore all the available adapter plates for the Hellcat, check out our adapter plate finder here.
K Footprint Optics
Holosun’s K footprint optics include the 407K, 507K, 507K ACSS, SCS Carry, EPS Carry, and the full-sized EPS. Each of these optics requires an adapter plate for installation. We tested plates from three manufacturers—CHPWS, Calculated Kinetics, and DPP—to find the best co-witness, and the DPP plate proved to be the thinnest, so that’s the one we used for this setup.
As a side note, the EPS Carry and SCS Carry do come with an RMSc to K footprint plate, which you can use, but it causes some overhang on the slide due to being a generic plate rather then specifically made for the Hellcat. The DPP plate offers the same thin profile without that issue.
The specific DPP plate you’ll need depends on the optic you're installing. There's a dedicated plate for the 407K, 507K, and 507K ACSS, and another for the EPS Carry, SCS Carry, and full-sized EPS (though the full-sized EPS might not be ideal for many due to the overhang).
407K / 507K / 507K ACSS
These optics have a taller deck height compared to other K footprint models, which works to our advantage. Their integrated rear iron sights are taller than the Hellcat's factory sights, and since an adapter plate is required, this setup results in an improved co-witness with the red dot’s iron sights.
SCS Carry
The SCS Carry, due to the need for an adapter plate, only provides a partial view of the front iron sight. However, it remains fully functional. The image above demonstrates this setup.
EPS Carry
Similar to the SCS Carry, the EPS Carry also provides only a partial view of the front iron sight due to the use of an adapter plate.
Full-Sized EPS
Lastly, as with the other two optics with a lower deck height, you get a partial view of the front sight, but the co-witness is still functional. The EPS Full Size has the most noticeable overhang on the slide though, making it a less likely choice for those daily carrying a Hellcat.
Conclusion
And there you have it—those are all the co-witnessing options for pairing a Holosun optic with the Springfield Armory Hellcat. Each optic has its own strengths depending on your specific needs and budget.
If you're aiming for the best co-witnessing experience with the Hellcat with standard height iron sights, the 407K, 507K, or 507K ACSS are your top contenders.
Keep in mind that co-witnessing is just one factor in selecting the right optic, so take your time to find the one that best suits your needs. If you have any questions on anything in today's blog, reach out to us and we'll help you decide what's the best optic for you!
