Mounting a scope on your AR-15 can significantly enhance your shooting accuracy and overall experience. This process, while seemingly straightforward, requires precision and attention to detail to ensure proper zeroing and reliable performance. This guide will walk you through each step, providing you with the knowledge to successfully mount your scope and achieve optimal accuracy. We'll cover everything from choosing the right mounts to zeroing your scope for consistent shots.
Choosing the Right Scope and Mount for Your AR-15
Before you even begin the mounting process, selecting the appropriate scope and mount is crucial. The wrong combination can lead to frustration and inaccurate shooting.
Understanding Scope Options:
AR-15 scopes come in a wide variety of magnifications, reticles, and features. Consider these factors:
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Magnification: Lower magnification (e.g., 1-4x or 1-6x) is ideal for close-quarters combat (CQB) and medium-range engagements, offering a wider field of view. Higher magnification (e.g., 4-16x or higher) is better suited for long-range shooting, allowing for precise target acquisition at greater distances.
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Reticle: The reticle is the crosshairs or aiming point within your scope. Popular choices include:
- Mil-Dot: Provides ranging capabilities and holdover adjustments.
- BDC (Bullet Drop Compensator): Offers pre-compensated aiming points for various distances.
- Simple Crosshairs: A straightforward option for those who prefer a less cluttered reticle.
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Objective Lens Size: This refers to the diameter of the front lens. A larger objective lens gathers more light, improving low-light performance.
Selecting the Correct Mount:
The scope mount is the bridge between your scope and your AR-15's upper receiver. Choosing the right mount is paramount for secure and reliable scope performance.
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Height: Mount height is determined by the diameter of your scope's objective lens and the distance you need between the scope and your charging handle or other upper receiver components. Too low, and you'll have clearance issues. Too high, and your cheek weld will be uncomfortable.
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Type: Common AR-15 scope mount types include:
- Picatinny/Weaver Mounts: These are the most common and widely compatible mounts. They feature a rail system with slots for securing the mount and scope rings.
- QD (Quick Detach) Mounts: Allow for quick and easy scope removal and reattachment.
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Material: Most AR-15 scope mounts are made from aluminum alloy for durability and lightweight construction. High-quality mounts are typically made from 6061-T6 aluminum or even stronger materials.
Step-by-Step Guide to Mounting Your Scope
Once you've selected your scope and mount, it's time to begin the mounting process. Follow these steps carefully:
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Gather Your Tools: You'll need a torque wrench (essential!), a screwdriver (possibly multiple types depending on your mount), and potentially a punch or other tools to assist in mount installation.
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Secure the Mount to the Upper Receiver: Carefully align your chosen mount with the Picatinny rail on your AR-15's upper receiver. Tighten the mount screws using your torque wrench, ensuring you don't over-tighten (consult your mount's instructions for proper torque specifications). Never hand-tighten these screws.
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Mount the Scope Rings: Attach your scope rings to the mount, following the manufacturer's instructions. Again, use the torque wrench to tighten the screws to the specified torque.
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Install the Scope: Carefully place your scope into the rings and tighten the ring screws using your torque wrench, ensuring even pressure.
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Check for Proper Alignment: Inspect your scope to ensure it's properly aligned and securely mounted. Look for any potential issues before proceeding.
Zeroing Your Scope
After mounting the scope, you need to zero it to ensure accurate shots at your desired distances. This involves adjusting the scope's windage and elevation turrets to align your point of aim with your point of impact.
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Find a Stable Shooting Position: Use a stable rest (benchrest, shooting bag) to minimize movement.
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Fire a Few Test Shots: Fire several shots at your target at a known distance.
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Adjust Windage and Elevation: Based on where your shots land, adjust your scope's windage (left/right) and elevation (up/down) turrets to bring your point of impact closer to your point of aim.
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Iterate: Repeat this process, firing test shots and making adjustments until your point of impact is consistently within your desired accuracy limits.
Maintaining Your Scope and Mount
Regular maintenance ensures the longevity and accuracy of your scope and mount. Here are some tips:
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Clean Your Scope: Clean your scope lens regularly with a microfiber cloth and lens cleaning solution.
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Inspect the Mount: Periodically inspect your scope mount for any signs of looseness or damage.
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Re-zero Periodically: Re-zero your scope if it's been subjected to significant impact or temperature changes.
By following this guide and practicing safe firearm handling, you can successfully mount a scope on your AR-15, enhancing its accuracy and your overall shooting experience. Remember to always consult your specific scope and mount manuals for detailed instructions and safety precautions.