Mounting a scope on your AR-15 can significantly enhance your shooting accuracy and overall experience. However, improper mounting can lead to zeroing issues and even damage to your firearm. This comprehensive guide will walk you through the process step-by-step, ensuring a safe and effective installation.
Understanding AR-15 Scope Mounting Basics
Before diving into the installation process, understanding the fundamental components is crucial. The most common mounting system uses a Picatinny rail (also known as a MIL-STD-1913 rail), a standardized interface found on most AR-15 receivers. This rail provides a series of slots for attaching various accessories, including scopes.
You'll need several key components:
- AR-15 Upper Receiver: This is the top part of your rifle where the scope will be mounted. Ensure your upper receiver has a Picatinny rail.
- Scope Mounts: These are the intermediary pieces that connect your scope to the Picatinny rail. They come in various heights (low, medium, high) and lengths, influencing eye relief and overall setup. Choosing the correct height is vital for proper cheek weld and sight picture.
- Scope Rings: These clamp your scope securely to the scope mount. They are typically sold as a matched pair.
- Scope: Your chosen optic, ranging from low-power variable scopes to high-magnification precision scopes.
- Tools: You'll need a torque wrench (essential to prevent damage), Allen wrenches (sizes vary depending on your mounts and rings), and possibly a gunsmithing mat for protection.
Step-by-Step Guide to Mounting an AR-15 Scope
1. Choose the Right Scope Mount:
The height of your scope mount depends on your chosen scope and personal preferences. A higher mount provides better clearance for larger scopes and allows for a more comfortable cheek weld. A lower mount is preferable for closer-range shooting or when minimizing profile is important. Consider the overall length of the scope and your personal shooting style when making this selection. Low profile mounts are generally recommended for red dot sights, while higher mounts are suitable for scopes with more magnification.
2. Attach the Scope Mount to the Picatinny Rail:
Align the scope mount with the Picatinny rail on your upper receiver. Ensure it's properly seated and aligned. Tighten the mounting screws using your torque wrench to the manufacturer's recommended specifications. Do not overtighten. Overtightening can strip the screws or damage the rail.
3. Mount the Scope Rings to the Scope Mount:
Carefully place the scope rings onto the scope mount. Again, ensure proper alignment. Securely fasten the scope ring screws using your torque wrench, adhering to the manufacturer's recommended torque settings.
4. Install the Scope into the Scope Rings:
Gently place your scope into the scope rings. Ensure the scope is centered and properly aligned within the rings. Tighten the scope ring caps, again using your torque wrench and following the manufacturer's guidelines. Do not overtighten.
5. Verify Proper Alignment and Function:
Once everything is tightened, visually check the alignment of your scope. Make sure it’s centered and that there’s no wobble. Cycle the action of your AR-15 to confirm that the scope doesn’t interfere with the bolt carrier group.
Zeroing Your Scope
After mounting your scope, the next crucial step is zeroing. This involves adjusting the scope's windage and elevation adjustments to ensure accurate bullet impact at various distances. This requires time and patience at a shooting range. Start at a closer range (25 yards), then progress to longer distances as needed.
Safety Precautions
- Always handle firearms responsibly and safely. Treat every firearm as if it were loaded.
- Never point a firearm at anything you do not intend to shoot.
- Always use appropriate eye and hearing protection.
- Follow all manufacturer's instructions and recommendations.
- If you're unsure about any aspect of this process, consult a qualified gunsmith.
By following these steps and prioritizing safety, you can successfully mount your scope and enjoy enhanced shooting accuracy with your AR-15. Remember that proper maintenance and regular cleaning are essential for the longevity of your equipment.
