This is my 5 year update for my Holosun HS403A 2MOA red-dot sight.Nearly five years have passed now and I've used this Holosun sight dozens of times and it has withstood thousands of 5.56 and .223 rounds with zero issues. Add to that the important point that the Holosun has held it's zero and the original battery is still giving me a crisp, bright dot to aim with. Holosun will be the 1st sight I will purchase when looking for a new electronic sight. I've tried others but I love the Holosun for it's rugged reliability and ease of use. I'll simply start this review by stating the obvious, Aim-Point had the micro red-dot market in their pocket because Aim-Point made the best red-dot sights. Other red-dot manufacturers have come along such as Vortex with their Sparc and earlier models. And Bushnell has offered the TRS-125 which is an awesome little sight at a great price. But the Vortex Sparc does not even come close to the Aim-Point red-dot sights in battery life not to mention the Sparc has a on-off pressure switch which can accidentally turn the Sparc on if the pressure switch is laid against something which depresses the switch. Sounds like little issues unless one depends on a red-dot sight to help them stay alive.
The Bushnell TRS-125 has a knob with the on position facing the operator and it takes turning the knob to increase or decrease the red-dots brightness level. These are good things to me as is the battery life which is longer then the Sparc but still doesn't come close to the Aim-Point series of micro red-dot sights or the Aim-Point Comp M4. The Vortex Sparc & the Bushnell TRS-125 have relatively precise, crisp dots like an Aim-Point but both are limited in how much water pressure they can handle as opposed to the Aim-Point. And yes you might say you won't be swimming out of a nuclear submarines torpedo tube in scuba gear anytime soon but I have seen red-dot sights dropped in water over 15' in depth and when finally recovered no longer work. Not a good thing if one needs it to help make it through a hunt or other event.
Now there is the Holosun micro red-dot which touts a 50,000 hour battery life and is supposedly submersible to 100'. The Holosun also has a precise 2 MOA dot which makes for more precise shots. Add to that a limited lifetime warranty & a price tag often around $200 and you now have a clear contender to the Aim-Point's excellent but expensive series of red-dot sights. That being said I'm only giving the Holosun 4 stars because I don't prefer pressure switches on my red-dot sights and this Holosun has yet to prove it will actually run for some 5 years ( 3 to 4 years would make me a believer ) or take being submerged in water at some 50' for a few hours.
When these events have occurred and the Holosun micro red-dot proves it will do what Holosun touts then I will indeed return to give it 5 stars. But from the outset other then the two pressure switches along the top of this unit I really like this red-dot and upon having fired it mounted to a .308 WIN semi-auto AK variant plus an AR-15 in .223 it has held its zero every time through several hundred rounds of .308 and .223 and stays on in weather under 15 degrees. These are good things and gives me hope that it will have me give it 5 stars about three to four years from now.
| Brand | HOLOSUN |
|---|---|
| Color | black |
| Sport | Hunting |
| Item Weight | 4.16 ounces |
| Material | Aluminum |
| Magnification Minimum | 1 x |
| Compatible Devices | Handgun |
| Mounting Type | Weaver Mount |
| Night vision | No |
| Model Name | HS403A |
| Manufacturer | HoloSun Technologies Inc. |
| UPC | 760921087305 702669900843 784427865939 |
| Item Package Dimensions L x W x H | 4.9 x 3.7 x 3.2 inches |
| Package Weight | 0.23 Kilograms |
| Item Dimensions LxWxH | 2.36 x 1.57 x 2.95 inches |
| Brand Name | HOLOSUN |
| Country of Origin | China |
| Part Number | HS403A |
| Hand Orientation | Ambidextrous |
