Surefire x300 Ultra A Vs B

Hey Gunners! Welcome to another review comparison of Surefire x300 Ultra A Vs B Surefire stands out as one of the most esteemed manufacturers of lights and lasers worldwide. Their products find application across the globe among Law Enforcement Officers (LEO) and military personnel hailing from various countries. Focused on quality, dependability, and a proven track record, I found myself in need of a flashlight for my TM Glock 19. After dedicating numerous days to research, combing through reviews, watching YouTube videos, and exploring forums, we ready to share our knowledge.

The majority of Shooters are uncertain about whether to purchase the surefire x300 Ultra model A or B. Here, I will contrast the Surefire x300 Ultra A and B to dispel any misconceptions you may have about these weapon lights.

The Surefire x300 Ultra A and B are available in two color variants: black and tan. I chose the black one because it was less expensive at the time I made my purchase. As a result, if the features are the same, color is irrelevant.

The Surefire x300 Ultra A can be readily attached to a handgun or rifle. The SureFire x300 Ultra B can be quickly attached to a Picatinny rail adapter, and there is a 100% guarantee that it will also connect to a Universal Rail Adapter.

Let’s start by contrasting the features of the surefire x300 Ultra A and B. Don’t skip anything else either if you want to understand these two weapon lights better.

Core Specification

What’s The Difference?

There is only one difference between the Surefire x300 Ultra A and Surefire x300 Ultra B, and it is linked to mounting. Installing the Surefire x300 Ultra A features the earlier model rail lock, which operates on a quick attack method. On the other hand, the Surefire x300 Ultra B incorporates a T-slot Mounting Rail that operates faster than the Surefire x300 Ultra A.

The earlier iterations of the X300U-A (manufactured before 2016 when they were initially discontinued) had a luminous output of 500 lumens. Upon the release of the X300U-B, they enhanced the lumen output to 600 lumens while preserving the same runtime. When Surefire reintroduced the X300U-A to the public, they also elevated its output to 600 lumens.

The sole distinction between the 500 lumen models and the recent 600 lumen (and presently the 1,000 lumen) ones lies in the activation paddles. The initial X300U-A features a longer, narrower design, while the X300U-B and the latest production X300U-A sport a shorter, stubbier paddle. Essentially, the only reliable method to discern whether you possess the new 600 lumen X300U-A or the older 500 lumen X300U-A is by examining the paddles. There won’t be any additional markings on the lights themselves indicating the lumen output.

The Surefire x300 Ultra A, with its vintage mounting mechanism, is the ideal option for pistols with polymer bodies. While the Surefire x300 Ultra B, which has the more conventional nut fastener, is the ideal option for AR-15 and metal-framed guns.

All Aspects Of Surefire x300 Ultra A Vs Surefire x300 Ultra B

All aspects of the Surefire x300 Ultra A and B are identical except for the differences I’ve already described. Let’s examine the features that these weapon lights have to offer.

Durability

The Surefire x300 Ultra A and B are entirely encased in the lightweight and durable material that provides these weapon lights a boost. That body material is “Aluminum,” and it is “Mil-Spec Highly Coated.” These weapon lights have been anodized to prolong their lifespan and keep them free from deterioration.

The Surefire x300 Ultra A and B include a “Mil-Spec Hard Anodized” coating in addition to an IPX7 rating, which enables shooting in the rain and protects the weapon’s light from moisture and immersion. However, the time limit is only half an hour and no longer.

Furthermore, because aluminum is a strong material, these weapon lights will withstand crushing impact or any unfortunate drop. I can reassure you that all of these claims about durability are accurate since I have rigorously examined every component of these weapon lights over the past few years.

Reliability

The two-year guarantee that the Surefire Company offers its customers is great and covers both the battery packs and chargers in addition to the replacement and repair of weapon lights.

This two-year guarantee from Surefire is free of charge for Surefire products. The only thing that stands out is that if you destroy your weapon light, the firm will accept no responsibility for it. The company will only replace the faulty products that come into the market from the already faulty ones. Furthermore, the company will repair minor damage like scratches or battery faults, etc. 

Size and Weight

The Surefire x300 Ultra A and B have the same dimensions when compared to other products of the same weight, however, the weight difference is negligibly different and barely perceptible. Both weapon lights measure 3.6 inches in length and feature a 1.125-inch bezel.

Surefire x300 Ultra A weighs 4.0 ounces, whereas Surefire x300 Ultra B weighs 4.1 ounces, so the difference in weight is only 0.01 ounces. Despite the 0.01-ounce difference, these weights are neither good nor terrible overall. Therefore, neither less nor more strain will be placed on the shooter’s hand.

Source of power

The package comes with two CR-123A batteries, each of which has a 1.25-hour operating time. Although the CR-123A battery’s short run duration does not particularly excite me, I can’t deny how well these weapon lights function in general. Maybe you won’t have any issues with this battery; it’s just my preference.

Light operations

There are two modes of operation available in the surefire x300 Ultra A and B, which are momentary on and constant on light operation.

The momentary on mode works like an SOS flashlight function where the light turns on and off each second. To turn this mode on, you just have to simply press and hold any one toggle switch and to turn this mode off, simply release the toggle switch. 

The second mode of operation is the constant-on mode of operation, where the light will stay on till you want. To turn this mode on, rotate the toggle switch either up or down.

Downsides Of Surefire x300 Ultra A Vs B

The downsides of the Surefire x300 Ultra A and B are similar, however, let’s look at the downsides of these two weapon lights.

• Expensive – Cost a lot
• Strobe mode is missing
• Use of older battery
• A little heavy weapon lights

Which Surefire x300 Ultra Model, A Or B, Is More Affordable?

In terms of price, there is no difference between the Surefire x300 Ultra A and B weapon lights. The Surefire x300 Ultra A and B have the same price, which is not cheap.

My advice is to make a one-time purchase regardless of whether you have to pay more or less. Surefire x300 Ultra A and B have a lot of features that I’m sure you don’t want to miss out on. So hurry up and get your preferred one now.

You can also buy the newer version see My detailed comparison of Surefire X300U Vs XH35.

Surefire x300 Ultra A Vs B – Comparison Video

Wrapping It Up – Who’s The Winner?

Based on my testing and research on the Surefire x300 Ultra A and B, I believe I should support the Surefire x300 Ultra B. There is no doubt that both of these weapon lights share all features except one. However, the Surefire x300 Ultra B is a more selectable option because of the distinction between these two weapon lights.

So, to make your decision easier, I’ll go over every aspect of the Surefire x300 Ultra B here. The Surefire x300 Ultra has excellent dimensions, a dependable option, a sturdy weapon light, and two modes of operation.

You might think twice before choosing the Surefire x300 Ultra A over the Surefire x300 Ultra B. You can also purchase that; simply review all of the specifications and mounting details of the Surefire x300 Ultra A before making a purchase.

FAQs