Description
The Holosun 507Comp is an open-emitter competition pistol red dot built around one idea: a bigger window so you find the dot faster. At 1.1" x 0.87", the viewing area is noticeably larger than a standard 507-class optic, which is what you want on the clock when you're driving the gun between targets and can't afford to hunt for the dot on the draw. It sits in the same competition class as the Trijicon SRO and Leupold DeltaPoint Pro, and it costs less than both.
It mounts on optics-ready pistols using the industry-standard RMR footprint, so it drops onto any RMR-cut slide or adapter plate without anything proprietary. This is a slide-mounted pistol sight first and foremost. It will physically sit on an RMR-pattern mount on other platforms, but it's designed and shaped for handgun competition, not as a rifle dot.
The headline feature is the Competition Reticle System. Instead of being stuck with one reticle, you get a 2 MOA center dot plus selectable 8, 20, and 32 MOA circles, and you can run the dot alone or the dot inside any of the three rings. The practical payoff: a big ring is fast to catch on close targets, the bare 2 MOA dot is precise on far or tight shots, and you can pick the combination that fits the stage instead of compromising. You cycle the options with the brightness buttons rather than a menu.
The rest is standard competition-grade Holosun. It's machined from 7075 T6 aluminum, sealed to IP67 against water and dust, runs Shake Awake so it sleeps when the gun sits still and wakes the instant you pick it up, and uses a side-loading CR1632 tray so you can swap the battery without pulling the optic off the slide and re-zeroing. You can see the matching 507Comp ARD below and the rest of our red dots and optics here.
Cut the Glare
An open-emitter competition optic with a big lens shows glint and reflection in bright sun. The CovertArms Holosun 507Comp ARD is a honeycomb anti-reflection device cut specifically for this optic's window to kill that reflection and add a little lens protection.
How It Compares to Our Other Holosun Pistol Dots
If the big competition window isn't what you need, the Holosun 507C X2 is the standard-window enclosed-class workhorse on the same RMR footprint, the 407C X2 is the simpler single-dot version, and the 508T X2 adds a titanium housing. All share the RMR footprint, so mounting is the same across them.
Key Features
- Large competition window. 1.1" x 0.87" lens for faster dot pickup and target transitions.
- Competition Reticle System (CRS). Selectable 2 MOA dot with 8, 20, or 32 MOA circles, run alone or in combination.
- RMR footprint. Direct mount on any RMR-cut optics-ready slide or adapter plate.
- Shake Awake. Sleeps when idle, wakes on motion to save battery.
- Side-loading battery. CR1632 tray swaps without removing the optic or losing zero.
- 7075 T6 aluminum, IP67. Built and sealed for high-round-count competition use.
- Red or green reticle. Available in both emitter colors.
Specs
- Type: Open reflex competition pistol sight
- Reticle: CRS, 2 MOA dot with selectable 8/20/32 MOA circles
- Reticle color: Red (650nm) or Green (540nm)
- Magnification: 1x, parallax-free, unlimited eye relief
- Window size: 1.1" x 0.87"
- Footprint: Trijicon RMR
- Housing: 7075 T6 aluminum, anodized
- Sealing: IP67 waterproof
- Battery: CR1632, side-loading tray
- Battery life: Up to 50,000 hours (varies with reticle and brightness)
- Adjustment: 1 MOA per click, ±30 MOA travel
- Weight: ~1.7 oz
FAQ
What does the 507Comp mount on?
Optics-ready pistols with an RMR footprint. It drops directly onto any RMR-cut slide, or onto a non-optics-ready pistol using an RMR adapter or dovetail mount. If you're unsure whether your slide is RMR-pattern, check your pistol's optic cut before ordering.
What is the Competition Reticle System?
It's a selectable reticle. You get a 2 MOA center dot plus 8, 20, and 32 MOA circles, and you choose the dot by itself or the dot inside any of the three rings. Bigger rings are faster to acquire up close, the bare dot is more precise at distance.
Red or green dot, which should I get?
Green is often easier for some eyes to pick up in bright daylight and against busy backgrounds, while red draws a bit less battery. Both use the same CRS reticle and housing. It comes down to personal preference.
Does it have Shake Awake?
Yes. The optic sleeps after a period of no movement and turns back on instantly when it senses motion, so it's ready on the draw without you switching it on.
How do I change the battery?
It uses a side-loading CR1632 tray, so you slide the battery out from the side without removing the optic from the slide. That means you don't lose your zero when you replace it.
Can I put an anti-reflection device on it?
Yes. The CovertArms Holosun 507Comp ARD is cut specifically for this optic's window to reduce glint and reflection in bright light.
