Accurate zeroing is crucial for any firearm, and the AR-15 is no exception. Before you head to the range and expend valuable ammunition, bore sighting offers a significant advantage by providing a close approximation of your rifle's point of impact. This process aligns your sights with the barrel's bore, drastically reducing the number of shots needed for precise zeroing. This guide will walk you through bore sighting your AR-15 efficiently and effectively.
What is Bore Sighting?
Bore sighting is a preliminary aiming process that aligns your rifle's sights—iron sights, red dot, or scope—with the barrel's bore. It's a quick and easy method to get your sights relatively close to the target before you begin the more precise process of zeroing at the range. This significantly reduces the time and ammunition spent on fine-tuning your zero.
Tools You'll Need
While the specific tools may vary slightly depending on your chosen bore sighting method, you'll generally need:
- AR-15 Rifle: Obviously, this is the star of the show!
- Bore Sighting Tool: This can range from a simple bore sighter with a laser or light attachment to more sophisticated devices. Consider your budget and comfort level when choosing a tool.
- Target: A clear target at a known distance (ideally 25 yards or more) is essential.
- Eye Protection: Always prioritize safety by wearing eye protection during this process.
Methods for Bore Sighting Your AR-15
Several methods exist for bore sighting your AR-15, each with its own advantages and disadvantages. Here are two common approaches:
1. Using a Laser Bore Sighter
This method is generally considered the easiest and fastest.
- Insertion: Carefully insert the laser bore sighter into the barrel's chamber. Ensure it's seated firmly and straight.
- Activation: Activate the laser.
- Alignment: Aim the rifle at your target. Adjust your sights (iron sights, red dot, or scope) until the laser point aligns with the center of your target.
Advantages: Quick, simple, and relatively inexpensive.
Disadvantages: Requires purchasing a bore sighter and the accuracy depends on the quality of the bore sighter.
2. Using a Non-Laser Bore Sighting Tool
This often involves using a tool that allows you to visually align the bore with your sights.
- Positioning: Secure the rifle safely. Position your head to align your eye with the bore.
- Alignment: Looking through the bore and aligning the sights to the center of the bore, makes it possible to adjust the sight's position before firing.
- Adjustment: Adjust your sights until they are aligned with the center of the target as seen through the bore.
Advantages: May be more accurate than a laser bore sighter and requires no batteries.
Disadvantages: This method can be more challenging for beginners and requires better skill and accuracy than using a laser.
Fine-Tuning at the Range
Bore sighting only provides a rough approximation. After bore sighting, you'll still need to head to the range to fine-tune your zero using live ammunition. Remember always to:
- Practice Safe Gun Handling: Follow all firearm safety rules at all times.
- Start with Small Adjustments: Make small adjustments to your sights at a time to avoid overcorrection.
- Shoot Multiple Groups: Fire several groups of shots at your chosen distance to confirm your zero.
- Adjust as Needed: Based on your groupings, further refine your sight adjustments.
Conclusion
Bore sighting your AR-15 is a worthwhile step before range time. By accurately aligning your sights with the bore, you can save ammunition and time while achieving a more precise zero. Choose the bore sighting method that suits your comfort level and resources, always prioritize safety, and enjoy the improved accuracy that comes from properly zeroing your AR-15. Remember to always consult your firearm's manual and follow all safety guidelines.
