The Blackhawk 419001BBR represents a versatile addition to the Blackhawk Omnivore range of holsters. Designed to fit over 150 types of semi-automatic handguns, this holster offers great flexibility for firearm enthusiasts. The highlight feature is its active retention mechanism, purposefully crafted to lock securely onto a unique rail attachment layout, as well as SureFire X300/X300U-A models.A standout feature of this holster is its instinctive thumb release. This intuitive function allows you to effortlessly disengage the locking mechanism from the rail attachment device during handgun removal, ensuring swift and seamless access to your firearm when needed.