Holosun 509T X2 Red FDE Proven Titanium Enclosed Sight

Description

The Holosun 509T X2 Red FDE combines Holosun’s titanium enclosed pistol sight with a classic 650nm red Multi-Reticle System and a Flat Dark Earth finish. It is a hard-use optic for FDE duty and defensive pistols where a sealed emitter and a tough housing matter more than shaving ounces.

Holosun 509T X2 Red FDE Overview

The housing is machined from grade 5 titanium instead of the aluminum used on most pistol dots, so it handles drops, muzzle strikes and slide-mounted abuse better than lighter sights. Front and rear glass fully enclose the LED, keeping rain, snow and lint off the emitter. The window is 0.66 inches wide by 0.9 inches tall, and the whole sight weighs just 1.27 ounces. This listing is part number HE509T-RD-X2-FDE, the red reticle version.

Red or Green: Which Fits You

Red is the traditional choice and still the most popular. It draws slightly less power than green, holds a crisp edge for many eyes, and stands out well against green foliage and in dim indoor light. Green is easier for some shooters to see in bright sun and can look rounder to people with astigmatism. If you can, look through both before deciding. If you already own red dots on other guns, staying with red keeps your training consistent.

Three Reticles in One Sight

The MRS menu offers a 2 MOA dot by itself, a 32 MOA circle by itself, or the circle with the dot centered inside it. Most defensive shooters run the circle-dot: the ring catches your eye quickly during a fast draw, and the center dot handles precise shots. Switch to the plain dot for small targets at 25 yards or for bullseye practice. The sight remembers the last reticle and brightness you used.

Power and Controls

Battery life is rated at 50,000 hours at setting 6, and the cell is changed from a side tray without touching your zero. Shake Awake powers the LED down when the pistol is still and back up the moment it moves. A top-mounted solar panel adds a power backup in good light. You can set brightness manually or run automatic mode, and the lockout feature stops the buttons from being pressed by a holster.

Mounting the 509T

This optic uses a dedicated 509T footprint, and Holosun includes an adapter so it can also mount to RMR-cut slides. Factory optic-ready pistols such as Glock MOS and HK VP models normally need a dedicated plate, which is sold separately. Confirm your slide cut first, use thread locker, and torque screws to spec. Because the 509T is taller than open micro dots, many owners pair it with suppressor-height irons to keep a co-witness.

Downsides to Weigh

This is not a small sight. On subcompact carry pistols it can overhang the slide and look out of proportion; the EPS Carry is a better fit there. It also costs more than aluminum enclosed sights. The FDE coating will show edge wear over years of holster use. In exchange you get one of the most durable pistol optics on the market, with 1 MOA clicks and plus or minus 30 MOA of travel.

Color Match

Choose this FDE version if your pistol has an FDE frame or slide. On a black pistol, the black 509T X2 will look more uniform. Finish color has no effect on optical or electronic performance.

Specifications

• Model: HE509T-RD-X2-FDE
• UPC: 810047073109
• Reticle: MRS, 2 MOA dot, 32 MOA circle, or circle-dot
• LED: 650nm red
• Magnification: 1x, unlimited eye relief
• Battery: CR1632 side tray, up to 50,000 hours
• Power features: Solar Failsafe, Shake Awake, auto brightness, lockout
• Adjustment: 1 MOA per click, plus or minus 30 MOA travel
• Housing: grade 5 titanium, Flat Dark Earth finish
• Water rating: IP67
• Window: 0.66 x 0.9 in
• Dimensions: 1.6 x 1.16 x 1.13 in
• Weight: 1.27 oz
• In the box: RMR adapter plate, screws, multi-tool, lens cloth

Before You Buy

Pistol optics are not firearms, so no FFL transfer is needed and the sight ships straight to your home. Confirm your slide cut and plate requirements, check that your holster is cut for an enclosed optic of this height, and plan to zero at the distance you practice most.

Who It Is For

The Holosun 509T X2 Red FDE is a great fit for owners of FDE duty or home-defense pistols who want a nearly bombproof enclosed optic with a fast red circle-dot reticle and the option of a precise 2 MOA dot.

Buy the Holosun 509T X2 Red FDE at MAG5 Firearms

MAG5 Firearms is a family-owned shop in Collegeville, Pennsylvania. Optics do not require an FFL transfer, so the Holosun 509T X2 Red FDE ships straight to your door. Browse our full selection of red dot sights for more pistol optics. For factory details, visit Holosun.