HOLOSUN HS407K X2 Red 6 MOA Dot Open Reflex Optical Sight for Subcompact Pistols - Durable Parallax Free Unlimited Eye Relief Handgun Sight with Aluminum Housing & Shake Awake Technology

Got this for my 43x and works perfectly. Had to get an adapter plate but that was expected.It mounts study and comes with multiple differ length screws depending on what you need. It is very durable and have not had an issue with it so far. The red dot is clean and is easy to find. The brightness is also adjustable.

Holosun 407K X2. Before I 'review', it should be said that this is my first red dot on a handgun, and I fell in love with the concept, sooo...Mounted it on a new Equalizer, here's my info and thoughts;1) Yes, it fits perfectly on the Equalizer with no plate or mill work needed on the slide.2) No, it DOES NOT come with the correct screws to mount the site. This is bogus on the part of Holosun and needs to be addressed. Too pricey of a sight to not come with all types of mounting screws.3) Because of that, you will need two 6-32 black oxide flat head socket screws. You can get these at most local hardware stores for about .40 cents each. I bought the 1/2" long overall length screws because that's all they had, but 9/16 or even 5/8" length would be better. The 1/2" do work though. Make sure you clean the oil off the screws and out of the slide holes before putting the loctite on and putting the screws in though.4) Yes, it will barely co-witness with the OEM iron sights. It's not perfect by any stretch, as you can only see about 20% of the front sight, but in an emergency situation, the iron sights would be usable and accurate with the 407K mounted.5) It works/fits very nicely with the IWB holster I bought (crossbreed).Took it to the range today. Wow. I was impressed! The 6MOA is perfect for me, and it only needed a few clicks up and right to be dead on after mounting it. Once sighted in, it held zero flawlessly round after round. I really like that you can change the battery without removing the sight, and the shake awake feature is super-sensitive and works very well. I love being able to stay on target with both eyes open to the surroundings. Despite the missing screws debacle, I would still buy it again. Nice sight.

I recently added the HOLOSUN HS407K X2 Red Dot Sight to my subcompact pistol, and I’m thoroughly impressed with its performance. This sight is an excellent choice for anyone looking to enhance their shooting experience, particularly with compact firearms.First, the build quality is top-notch. The HS407K X2 is lightweight and sturdy, designed specifically for subcompact pistols. The compact size doesn’t add much bulk to the firearm, which is perfect for those who value portability and ease of use.The 6 MOA red dot is bright, clear, and highly visible in a variety of lighting conditions. Whether I'm shooting outdoors in bright sunlight or indoors with low light, the dot remains crisp and easy to acquire, making target acquisition faster and more accurate. The brightness adjustment feature is also excellent, allowing for quick changes to suit your environment.I also appreciate the shake awake feature, which conserves battery life while ensuring the sight is always ready when you need it. The battery life is impressive—I've been using it for weeks without needing to replace the battery, even with frequent use.Another great feature is the robust construction, with the X2 offering superior durability. The sight is shockproof and waterproof, which gives me peace of mind when using it in harsh conditions.Overall, the HOLOSUN HS407K X2 is a fantastic red dot sight for subcompact pistols. It provides fast target acquisition, excellent battery life, and impressive durability—all in a compact package. If you're looking to upgrade your firearm with a reliable, high-quality sight, this is definitely worth considering.

Its a holoson optic. What more do you need to know? One of the best names out there. Affordable, durable, looks great on any gun. Just buy it. Its really that simple