how to mount a scope on an ar15

3 min read 19-01-2025

Mounting a scope on your AR-15 can significantly enhance your accuracy and shooting experience. This guide provides a step-by-step process, ensuring you get a secure and reliable setup. Whether you're a seasoned shooter or a newcomer, this detailed walkthrough will help you mount your scope correctly.

Choosing the Right Scope Mount

Before you even think about attaching your scope, selecting the correct mount is crucial. The wrong mount can lead to zeroing issues, scope damage, and even safety hazards.

Types of AR-15 Scope Mounts

Picatinny Rail Mounts: These are the most common and versatile option. They attach directly to your AR-15's Picatinny rail, which is usually located on the upper receiver. This provides a sturdy and reliable platform for your scope.
Low Profile Mounts: These keep the scope closer to the barrel, reducing the height of your sight picture. This is great for shorter shooters or close-quarters shooting.
High Profile Mounts: These raise the scope higher above the barrel, providing more clearance for larger scopes or accessories. They are often preferred for users who wear eye protection or have difficulty cheek-welting.
Offset Mounts: These are ideal for attaching a secondary optic, such as a red dot sight, at an offset angle.

Important Consideration: Always ensure your chosen mount is compatible with both your AR-15's rail and your scope's ring size. Consult your scope and mount manufacturer's specifications to guarantee a perfect fit.

Tools and Materials You'll Need

Before you begin, gather all the necessary tools and materials. This will make the process much smoother and prevent any delays.

AR-15 with Picatinny Rail: Naturally, you'll need your rifle!
Scope: The optic you're mounting.
Scope Mount: Make sure it's compatible with your rifle and scope.
Torque Wrench: Crucial for tightening screws to the manufacturer's recommended specifications. Over-tightening can damage your scope or mount.
Screwdrivers: Appropriate sizes to fit your mount's screws.
Allen Wrenches: If your mount uses Allen screws.
Gunsmithing Mat or Soft Cloth: Protects your rifle's finish from scratches.
Eye Protection: Always wear safety glasses when handling firearms.

Step-by-Step Guide to Mounting Your Scope

Now, let's go through the process of mounting your scope on your AR-15. Accuracy and precision are key here!

Step 1: Prepare Your Rifle and Mount. Lay your AR-15 on a soft surface, like a gunsmithing mat. Inspect your rifle's Picatinny rail for any debris. Ensure the mount is clean and free from obstructions.

Step 2: Attach the Mount to the Rail. Align the mount with the rail, ensuring it's seated correctly. Tighten the screws using your torque wrench to the manufacturer's recommended specifications. Avoid over-tightening.

Step 3: Mount the Scope Rings. Securely attach the scope rings to the mount. Again, use your torque wrench to ensure proper tightness.

Step 4: Install the Scope into the Rings. Gently place your scope into the rings. Ensure it's centered and aligned correctly before tightening the rings' screws. Use the torque wrench to tighten these screws to the specified torque.

Step 5: Double-Check Everything. After tightening everything, visually inspect your setup to ensure all screws are tight and everything is securely attached.

Step 6: Zero Your Scope. Take your AR-15 to the range. This crucial step involves adjusting your scope's turrets to ensure your point of aim matches your point of impact.

Troubleshooting Common Problems

Scope not level: Ensure your mount is correctly aligned on the rail before tightening screws.
Loose screws: Check your torque wrench's settings and retighten if necessary.

Maintaining Your Scope Mount

Regularly inspect your scope mount for any signs of looseness or damage. Periodically clean and lubricate the moving parts of your mount to keep everything functioning properly.

Conclusion

Mounting a scope on your AR-15 is a straightforward process if done correctly. By carefully following these steps and using the appropriate tools, you'll ensure a secure, accurate, and reliable setup for years to come. Remember, safety is paramount; always practice safe gun handling procedures. Happy shooting!