To mount the sight to a Weaver-style rail, follow these steps, refer to Figure 3:

1.Loosen the 7/64” hex retainer screw that secures the clamp.

2.Place the sight onto the rail such that the unthreaded portion of the cross bolt is fitted into a groove on the top of the Weaver-style rail. The user’s preference and the firearm will determine the optimal front to back position on the rail.

3.With the cross bolt inserted fully into the rail’s groove, push the sight as far forward as possible.

4.Tighten the hex retainer screw to draw the retainer nut into secure and fully seated contact with the opposite side of the rail.

FIGURE 3

NOTE: Loosen the retaining screw just enough to mount or remove the sight. It is not necessary to remove the screw completely, as the lock hardware will not be retained in the sight and could be lost.

To mount the sight to a 12 gauge Remington model 870, 1100 or 1187 shotgun, follow these steps, refer to Figure 4:

1.Remove the two through-pins from the shotgun.

2.Remove the two 1/8” hex retainer screws from the sight.

3.Place the sight onto the shotgun.

4.Re-install the two hex head screws through the sight and shotgun.

5.Tighten the two hex retainer screws to secure the sight to the shotgun.

FIGURE 4

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Bushnell 53-0021 instruction manual
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53-0021 specifications

The Bushnell 53-0021 is a remarkable tool designed for active outdoor enthusiasts looking to enhance their experience in nature. This compact and versatile device serves as a powerful rangefinder, adept at providing accurate distance measurements while boasting a range of features that cater to both casual and professional users.

One of the standout characteristics of the Bushnell 53-0021 is its precision. Equipped with advanced laser technology, this rangefinder delivers measurements with an accuracy of within one yard. This precision is essential for various applications, from golfing to hunting and even surveying, ensuring that users can rely on it for their specific needs. The device has a measuring range that spans from 10 to 1000 yards, accommodating a wide array of activities.

The Bushnell 53-0021 incorporates a user-friendly interface, making it accessible for both seasoned experts and beginners. A clear LCD display allows for easy reading of distance information, while its compact size ensures it can be comfortably carried during outdoor activities. The device is designed with a rugged, weather-resistant housing, meaning it can withstand challenging environmental conditions, whether it’s rain, fog, or dusty terrain.

Another highlight is the inclusion of multi-coated optics, which significantly improve light transmission and enhance visibility. This feature ensures that users can obtain clear and bright images, even in low-light conditions. The device also boasts a fast focus system which allows for quick adjustments to find the right target effortlessly.

Additionally, the Bushnell 53-0021 offers a scan mode function, enabling users to track moving objects effortlessly. This is particularly beneficial for hunters, as it allows for continuous range updates, ensuring users remain informed as they track their quarry.

Battery longevity is another consideration, and this rangefinder excels in this category. Designed to maximize battery life, the Bushnell 53-0021 ensures that users can rely on it for prolonged periods, whether it’s for a day trip or an extended adventure.

In summary, the Bushnell 53-0021 embodies the perfect blend of technology, precision, and usability. With its range, durability, and user-friendly features, it stands out in the market as an essential piece of equipment for anyone looking to enhance their outdoor experiences. Whether you are an avid hunter, golfer, or simply someone who enjoys exploring nature, the Bushnell 53-0021 is a tool you can trust to deliver accurate measurements and reliable performance.
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