Competition Scope Throw Lever Guide: Fast Magnification Changes for Precision Shooting
Reading time: 9 min read
Table of Contents
- What Is a Competition Scope Throw Lever?
- Why Competition Shooters Need a Throw Lever
- Key Features of the Boss Components Throw Lever
- Compatibility and Sizing Guide
- How to Install Your Scope Throw Lever
- Performance Benefits in Competition
- Throw Lever vs Standard Magnification Ring
- Maintenance and Care Tips
- Common Mistakes to Avoid
- Pro Tips for Competition Use
- Frequently Asked Questions
- Conclusion
What Is a Competition Scope Throw Lever?
A competition scope throw lever is a game-changing accessory designed for competitive shooters who demand rapid magnification transitions without compromising accuracy or shooting position. The Boss Components Competition Scope Throw Lever attaches directly to your riflescope's magnification ring, providing an extended lever arm that enables swift, precise adjustments with minimal hand movement.

Unlike traditional magnification rings that require careful finger manipulation, a throw lever allows you to make magnification changes with a single, fluid motion. This is particularly crucial in dynamic shooting disciplines like IPSC, USPSA, and PRS where target distances vary rapidly and every second counts.
Why Competition Shooters Need a Throw Lever
In competition shooting, the ability to quickly transition between magnification levels can mean the difference between a winning run and a missed opportunity. Here's why serious competitors rely on scope throw levers:
Speed and Efficiency: Traditional magnification rings require you to break your cheek weld, reposition your hand, and carefully rotate the ring. A throw lever eliminates these steps, allowing magnification changes in under a second whilst maintaining your shooting position.
Tactical Advantage: During multi-distance stages, you need to engage targets at varying ranges. A throw lever enables you to dial in the perfect magnification for each shot without losing precious time or compromising your stance.

Consistency: The extended lever provides a consistent reference point, allowing you to develop muscle memory for specific magnification settings. This repeatability is essential for stage planning and execution.
Key Features of the Boss Components Throw Lever
The Boss Components Competition Scope Throw Lever is engineered specifically for the demands of competitive shooting, combining lightweight construction with exceptional durability.
Premium Construction Materials
Manufactured from skeletonised, hard-anodised aluminium, this throw lever delivers the perfect balance of strength and weight savings. The hard-anodised finish provides superior wear resistance and corrosion protection, ensuring your lever maintains its performance through thousands of rounds and countless competitions.

Tool-Free Installation
The single-bolt attachment system allows for rapid installation and removal without specialised tools. This design enables you to quickly swap the lever between different scopes or adjust its position for optimal ergonomics.
Ergonomic Design
The lever's profile is optimised for gloved and bare-handed operation, with a shape that provides positive engagement without snagging on gear or clothing. The skeletonised design reduces weight whilst maintaining structural integrity.
Compatibility and Sizing Guide
The Boss Components Competition Scope Throw Lever is currently compatible with riflescopes featuring a magnification ring diameter of 1.930 inches (49mm). This sizing fits a wide range of popular competition scopes used in IPSC, USPSA, and precision rifle competitions.
| Specification | Details |
|---|---|
| Compatible Ring Diameter | 1.930 inches / 49mm |
| Material | Hard-anodised aluminium |
| Weight | Lightweight (skeletonised design) |
| Attachment | Single bolt system |
| Finish | Hard-anodised black |
Note: A full range of sizes for different magnification ring diameters is coming soon. Check the Boss Components website for updates on additional sizing options.
How to Install Your Scope Throw Lever
Installing your Competition Scope Throw Lever is straightforward and requires minimal tools. Follow these steps for optimal results:
- Clean the Magnification Ring: Wipe down your scope's magnification ring with a clean cloth to remove any dirt, oil, or debris that could affect the lever's grip.
- Position the Lever: Place the throw lever on the magnification ring at your preferred angle. Most shooters position it at approximately 45-90 degrees from the top of the scope for easy access.
- Insert the Bolt: Thread the mounting bolt through the lever and into the clamping mechanism. Hand-tighten initially to check positioning.
- Apply Threadlocker: For optimal security, apply a small amount of medium-strength threadlocker (such as Loctite 243) to the bolt threads. This prevents the bolt from loosening during recoil.
- Tighten Securely: Using an appropriate hex key, tighten the bolt firmly. Ensure the lever is secure but avoid over-tightening, which could damage the scope's finish.
- Test Operation: Rotate the magnification ring through its full range to verify smooth operation and ensure the lever doesn't interfere with other scope controls or mounting hardware.

Performance Benefits in Competition
The advantages of using a scope throw lever extend beyond simple convenience. Here's how it enhances your competitive performance:
Faster Stage Times
In timed competitions, every fraction of a second matters. A throw lever can shave 2-3 seconds off your stage time by eliminating fumbling with the magnification ring. Over the course of a match, these savings add up to significant competitive advantages.
Maintained Shooting Position
Breaking your cheek weld to adjust magnification disrupts your natural point of aim and requires re-establishing your sight picture. With a throw lever, you can make adjustments whilst maintaining your shooting position, keeping you on target and ready to engage.
Reduced Fatigue
During long competition days, the cumulative effect of repeatedly manipulating a tight magnification ring can cause hand fatigue. The mechanical advantage provided by a throw lever reduces the effort required, keeping you fresh through multiple stages.
Enhanced Situational Awareness
Quick magnification changes allow you to zoom out for target acquisition and zoom in for precise shot placement without losing track of the stage flow. This flexibility is particularly valuable in dynamic shooting disciplines.
Throw Lever vs Standard Magnification Ring
| Feature | Throw Lever | Standard Ring |
|---|---|---|
| Adjustment Speed | Under 1 second | 2-4 seconds |
| Cheek Weld Maintained | Yes | Usually no |
| Gloved Operation | Excellent | Difficult |
| Muscle Memory | Easy to develop | Challenging |
| Installation Required | Yes (5 minutes) | No |
| Added Weight | Minimal (skeletonised) | None |
Maintenance and Care Tips
Proper maintenance ensures your scope throw lever delivers reliable performance for years:
Regular Inspection: Before each match, check that the mounting bolt remains tight. Recoil and vibration can gradually loosen the attachment over time.
Cleaning: Wipe down the lever with a clean, dry cloth after each shooting session. Remove any powder residue, dirt, or moisture that could cause corrosion.
Threadlocker Refresh: Every 6-12 months, or after 1000+ rounds, remove the lever, clean the bolt threads, and reapply fresh threadlocker. This maintains optimal security.
Anodising Care: The hard-anodised finish is durable but not indestructible. Avoid using abrasive cleaners or tools that could scratch the surface. Minor scuffs are cosmetic and won't affect performance.
Common Mistakes to Avoid
Even experienced shooters can make these errors when using a scope throw lever:
Incorrect Positioning: Mounting the lever at an awkward angle forces unnatural hand movements. Take time to find the position that works best for your shooting style and hand size.
Over-Tightening: Excessive torque on the mounting bolt can damage your scope's finish or deform the magnification ring. Tighten firmly but not excessively.
Skipping Threadlocker: Without threadlocker, the mounting bolt will eventually work loose from recoil. This can cause the lever to shift position or fall off during a critical stage.
Neglecting Practice: Installing a throw lever and expecting immediate improvement is unrealistic. Dedicate dry fire time to developing smooth, consistent magnification transitions.
Pro Tips for Competition Use
Maximise your throw lever's effectiveness with these expert techniques:
Stage Planning: During your walkthrough, identify exactly where you'll need magnification changes. Visualise the lever operation as part of your stage plan.
Consistent Magnification Settings: Many competitors use specific magnification levels for different target distances (e.g., 4x for close targets, 8x for medium, 12x for long). Develop your own system and practice the transitions.
Support Hand Integration: Train to operate the lever with your support hand thumb whilst maintaining your firing grip. This allows for the fastest possible transitions.
Weather Considerations: In wet conditions, the lever provides better grip than a smooth magnification ring. In extreme cold, the extended lever is easier to operate with heavy gloves.

Frequently Asked Questions
Will a scope throw lever affect my scope's zero?
No, when properly installed, a throw lever should not affect your scope's zero. The lever attaches to the magnification ring, which is separate from the scope's internal adjustment mechanisms. However, it's always good practice to verify your zero after any scope modification.
Can I use a throw lever with any riflescope?
The Boss Components Competition Scope Throw Lever is designed for scopes with a 49mm (1.930 inch) magnification ring diameter. Always measure your scope's magnification ring before purchasing. Additional sizes for different ring diameters are coming soon.
How much does a scope throw lever weigh?
Thanks to its skeletonised design, the Boss Components throw lever adds minimal weight to your rifle setup. The exact weight is negligible compared to the performance benefits it provides.
Is the throw lever legal in IPSC and USPSA competitions?
Yes, scope throw levers are legal in IPSC and USPSA competitions. They're considered a standard scope accessory and don't violate any equipment rules. However, always verify current rules with your specific division and sanctioning body.
Can I install the throw lever myself?
Absolutely. Installation requires only a hex key and takes approximately 5 minutes. The single-bolt design makes it straightforward for shooters of all experience levels. For optimal security, use threadlocker on the mounting bolt.
Will the throw lever interfere with my scope caps or other accessories?
The compact, skeletonised design minimises interference with other scope accessories. However, check clearance with your specific scope caps, sunshade, or other attachments before installation.
How often should I check the throw lever's tightness?
Inspect the mounting bolt before each match or practice session. Recoil and vibration can gradually loosen the attachment. If you notice any movement, retighten immediately and consider reapplying threadlocker.
Can I use the throw lever with gloves?
Yes, the throw lever is specifically designed for easy operation with or without gloves. The extended lever arm and ergonomic profile provide positive engagement even with heavy winter gloves or tactical gloves.
Conclusion
The Boss Components Competition Scope Throw Lever represents a simple yet transformative upgrade for competitive shooters. By enabling rapid, precise magnification changes whilst maintaining your shooting position, it delivers measurable improvements in stage times and overall match performance.
Constructed from premium hard-anodised aluminium with a skeletonised design, this throw lever combines durability with minimal weight addition. The tool-free installation and universal compatibility with 49mm magnification rings make it an accessible upgrade for shooters across multiple disciplines.
Whether you're competing in IPSC, USPSA, PRS, or other dynamic shooting sports, the ability to quickly adapt your magnification to match target distance is invaluable. Invest in your competitive edge with the Boss Components Competition Scope Throw Lever and experience the difference that professional-grade accessories make.
Ready to upgrade your optics setup? Explore the Competition Scope Throw Lever and discover how Boss Components can elevate your shooting performance. Check out our Hot Deals and New Releases for more competition-ready accessories.
Related Products
Enhance your competition setup with these complementary Boss Components products:
- 1911/2011 Red Dot Scope Multi Mount - Universal optic mounting solution
- Bul Armory 1911/2011 Red Dot Mount - Precision optic mount for Bul Armory platforms
- SVI Infinity Red Dot Mount - Precision scope mount for SVI platforms
- 1911/2011 Adjustable Thumb Rest - Enhance your grip and control
- 1911 Hex Grip Screw & Bushing Kit - Premium hardware for your build
Explore More Resources
Continue your competition shooting education with these related guides:
- .223 Muzzle Brake Guide: Reduce Recoil & Improve Accuracy
- CZ Tactical Sport Brass Magazine Base Pads: Complete Guide
- Magnetic Magazine Pouches for Competition Shooting: Complete Guide
Safety & Compliance: Always follow safe firearm handling practices. Installation may require a qualified gunsmith depending on your experience level. Verify compatibility with your specific riflescope and competition rules. Ensure compliance with local Australian firearms regulations and competition division requirements.