The QUANTUM FAST RDO Professional Holster by Vega Holster represents the evolution of tactical and sport carry. Made from thermo-molded polymer with a soft inner lining, it is designed for firearms equipped with Red Dot Optics (RDO) and features a universal housing for tactical lights/lasers. The Level 2 "Ace Front Stop" retention system acts directly on the firearm, allowing you to use the holster with or without a light installed. Equipped with a foldable protective flap for the optic. Available for Glock, Beretta, Sig Sauer, and Walther platforms. Right-hand shooter version in Black, Olive, and Coyote colors.
This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.
| International | XS | S | M | L | XL | XXL | XXXL |
|---|---|---|---|---|---|---|---|
| Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 |
| US | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
| Chest Circumference (inches) | 33-35" | 36-38" | 39-41" | 42-44" | 45-47" | 48-50" | 51-53" |
| Chest Circumference (cm) | 84-89 | 91-97 | 98-104 | 107-112 | 114-119 | 122-127 | 129-134 |
| Waist Circumference (inches) | 28" | 30" | 32" | 34" | 36" | 38" | 40" |
| Waist circumference (cm) | 71 | 76 | 81 | 86 | 91.5 | 96.5 | 101.5 |
LOWA FOOTWEAR SIZE CHART
SIZE SELECTION:
THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)
conversion chart: UK size - (IT size) - size in mm
Size 6.5 (40) 257mm
Size 7 (40 3/4) 262mm
Size 7.5 (41.5) 266mm
Size 8 (42) 270mm
Size 8.5 (42.5) 274mm
Size 9 (43 1/4) 278mm
Size 9.5 (44) 283mm
Size 10 (44.5) 287mm
Size 10.5 (45) 291mm
Size 11 (46) 295mm
Size 11.5 (46.5) 300mm
Size 12 (47) 304mm
Size 12.5 (48) 308mm
Size 13 (48.5) 312mm
NEED ADVICE ON CHOOSING A SIZE?
Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!
e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!
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Designed to ensure lightning-fast extraction (Fast) without sacrificing anti-snatch retention, the Vega Holster Quantum Fast RDO is a cutting-edge Level 2 Duty holster. The thermo-molded polymer structure is fully lined inside: this premium detail protects the finish of your firearm and any attached light from scratches and wear during extraction cycles, while ensuring absolute operational silence.
This version is optimized for modern tactical setups. It features a front protective flap for the Red Dot Optic (RDO), which shields the lens from impacts, rain, and mud, and is designed to automatically flip open upon extraction (or be removed entirely if you prefer a minimalist profile). Like its larger sibling, the lower shell has a contoured cavity to accommodate all major tactical lights on the market. The internal locking system "bites" into the slide's ejection port: the holster thus guarantees rock-solid retention of the firearm in any configuration, whether with an illuminator or with the "naked" weapon.
Clarity on Purchase: In the selection menu, you will find several light options paired with your pistol. Don't worry! The mold for the light housing is the same for all and is universal. Whatever option you choose, the holster will perfectly accommodate lights like Surefire X300/X400, Streamlight TLR-1/TLR-2, and similar clones. There is also a dedicated screw to widen or tighten the light/laser passage. The only crucial choice you need to make carefully is your pistol model.
Level 2 security is entrusted to the Ace Front Stop system: an internal lever that acts on the firearm's ejection port. It is disengaged by pulling the thumb backward with a natural and instinctive movement, allowing for a much faster "Draw" compared to Level 3 systems. As standard, it comes with an adjustable (5-6 cm) double-loop belt attachment in a Mid-Ride configuration. The shell can be easily transferred to MOLLE adapters or Vega Holster leg platforms.
Technical Specifications
Product photos show an indicative color; the actual shade of the holster or the color of some minor components may vary slightly.
Compatibility (Real Firearms and 1:1 Replicas)
ATTENTION: All listed models accommodate the firearm both bare and equipped with tactical lights. The space for the light is universal. The light options in the selector are purely indicative: the mold is identical and accommodates X300, X400, TLR-1, TLR-2, and similar modules.
Advantages and Features
Pro Tips:
Why Choose the "FAST" (Level 2): If you operate in high-risk public order contexts where weapon snatching is a major concern (e.g., brawls, close combat), the Level 3 of the standard Quantum is unsurpassed. But if you are a sport shooter, a special forces operator, or engage in airsoft simulations where speed of engagement is everything, this FAST version is the mandatory choice. By removing the upper rotating strap, you've eliminated a dead time: your thumb only needs to pull back a single lever (Ace Front Stop) and the weapon is already out. Pure speed.
RDO Cover Management: The upper flap is a godsend if it's raining or if you're in the mud (it prevents the Red Dot emitter from getting clogged). However, it requires a decisive wrist flick during extraction to flip it open smoothly. If you use the holster in an indoor range or a dynamic shooting competition on a sunny day, use a screwdriver and temporarily remove the cover: you'll have an even cleaner draw without any obstruction above the slide.
Fine Calibration (The Two Screws): Vega Holster gives you total control. In addition to the usual passive retention screw on the firearm, you have a dedicated screw for the light/laser passage. If you use the pistol without a light, tighten the frame retention screw well. If you mount a somewhat "non-standard" light and feel it rubs too much when inserting it, loosen the lower screw of the laser passage. This way, the weapon will slide like butter (thanks also to the inner lining) without ever getting stuck halfway.