Air Arms S400 Biathlon
£1,000.00
Description
Air Arms S400 Biathlon – Precision, Speed, and Control in Every Shot
The Air Arms S400 Biathlon represents the pinnacle of competitive air rifle design, combining exceptional accuracy with unmatched ergonomics. Crafted specifically for biathlon athletes, it provides a seamless balance between lightweight construction and structural stability, allowing shooters to perform at their peak during training and competitions alike.
Transitioning from practice to competition, the S400 Biathlon delivers confidence, control, and consistency. Its meticulously engineered components, from the match-grade barrel to the fully adjustable stock, work harmoniously to enhance every aspect of shooting performance. Consequently, athletes can focus on precision rather than compensating for equipment shortcomings.
Every rifle in the S400 Biathlon series undergoes rigorous testing to ensure consistent results. Shooters immediately notice the difference in handling, balance, and responsiveness compared to standard air rifles. Moreover, Air Arms’ dedication to quality ensures that the S400 Biathlon maintains reliability and precision over thousands of shots.
This rifle is not merely a tool—it is a performance partner, designed for shooters who demand excellence in every aspect of their sport. Its intuitive design reduces learning curves for beginners while offering the nuanced adjustments that elite athletes expect.
Key Features of the Air Arms S400 Biathlon
The Air Arms S400 Biathlon excels because of its innovative features, each engineered to optimize accuracy, comfort, and reliability:
Precision Match Barrel
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Crafted to exacting standards for consistent shot placement
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Minimizes group size and ensures repeatable accuracy
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Tested under varying conditions to maintain performance reliability
Adjustable Stock
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Fully customizable length of pull, cheekpiece height, and buttpad position
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Supports shooters of all sizes and preferences
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Enhances ergonomic alignment, reducing strain during extended sessions
Lightweight Construction
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Balanced design for superior maneuverability
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Reduces fatigue during long competitions or intense practice
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Maintains stability without compromising durability
Ergonomic Grip Design
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Supports natural wrist and hand positioning
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Optimizes trigger control and comfort
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Reduces tension and improves follow-up shot accuracy
Advanced Recoil Management
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Minimizes muzzle rise for faster target reacquisition
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Maintains consistent point of aim even during rapid-fire sequences
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Enhances overall shooting rhythm for biathlon courses
High-Quality Trigger Mechanism
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Adjustable for pull weight and travel distance
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Provides crisp, predictable release for enhanced accuracy
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Engineered for durability under repeated competition use
Integrated Sighting Options
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Compatible with scopes and iron sights for varied shooting conditions
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Allows quick adjustment for environmental factors
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Enhances targeting precision across short and long distances
Durable Finish
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Protects against moisture, scratches, and other environmental impacts
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Maintains aesthetic and functional quality over extended use
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Ensures rifle longevity while maintaining performance
Each feature of the S400 Biathlon contributes directly to shooter confidence, allowing athletes to focus solely on skill execution rather than compensating for equipment deficiencies.
Performance and Accuracy
Consistent Shot Placement
The Air Arms S400 Biathlon sets itself apart through unparalleled consistency. Its match-grade barrel and precision-engineered firing system work together to minimize shot deviation. Shooters experience remarkable accuracy from the first shot to the last, whether training or competing. Transitioning between targets becomes effortless due to the rifle’s consistent balance and predictable shot behavior.
Rapid Target Acquisition
A lightweight design paired with advanced ergonomics allows shooters to acquire targets swiftly. Athletes can smoothly move between shooting positions without sacrificing control or stability. The ergonomic stock and grip facilitate quick adjustments while maintaining alignment, enabling athletes to engage targets efficiently during timed biathlon events.
Optimized Recoil Management
Effective recoil mitigation is critical for follow-up shots. The S400 Biathlon’s integrated recoil system significantly reduces muzzle rise, ensuring that shooters remain on target even during rapid sequences. Consequently, each shot maintains precision, minimizing the time needed for realignment and enhancing overall performance.
Performance Across Conditions
The S400 Biathlon is engineered to perform consistently under varying environmental conditions. Temperature fluctuations, humidity, and prolonged usage do not compromise accuracy. This reliability ensures athletes can depend on their equipment during competitions, providing peace of mind and allowing them to focus entirely on their technique.
Precision in Motion
Biathlon demands accuracy both at rest and immediately after physical exertion. The S400 Biathlon is designed for stability under dynamic conditions, including the transition from skiing to shooting. Its balanced design and responsive trigger facilitate precision shots even after high-intensity activity, supporting competitive shooters at every stage of their race.
Ergonomics and Shooter Comfort
Custom Fit for Every Athlete
Adjustability is central to the S400 Biathlon’s design. Length of pull, cheekpiece height, and buttpad positioning can all be tailored to individual requirements. These features ensure optimal alignment, reducing fatigue and allowing athletes to maintain consistent posture during prolonged practice or competition sessions.
Grip and Balance
The ergonomic grip supports natural wrist angles, improving trigger control and reducing strain. Additionally, the rifle’s balanced weight distribution enhances stability, enabling seamless movement between targets. The combination of ergonomic design and lightweight construction reduces physical stress and improves shooting endurance.
Intuitive Handling
Every aspect of the S400 Biathlon emphasizes ease of use. Shooters can quickly adjust settings without specialized tools, ensuring that the rifle adapts to changing conditions or personal preferences. This intuitive design promotes confidence, enabling athletes to focus fully on performance rather than equipment management.
Air Arms S400 Biathlon – Advanced Performance, Comparative Insights, and Training Excellence
Deep Dive into Performance
Shot Precision and Consistency
The Air Arms S400 Biathlon is engineered for unrivaled precision. Its match-grade barrel and finely tuned firing mechanism reduce shot dispersion, providing consistent grouping in every session. Athletes notice immediate improvements in accuracy, even when shooting in rapid succession. The rifle’s lightweight, yet balanced design facilitates smooth target transitions, ensuring the shooter maintains peak performance throughout.
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Minimal Shot Deviation: Precision manufacturing ensures repeatable results with every pellet
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Rapid Follow-Up Shots: Advanced recoil management allows for quick, accurate second and third shots
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Stable Shooting Posture: Ergonomic stock design enhances alignment and balance
Performance Under Dynamic Conditions
Biathlon competitions require accuracy following intense physical exertion. The S400 Biathlon excels in such conditions, maintaining stability and trigger responsiveness even when the athlete’s heart rate is elevated. Its balance and weight distribution prevent unnecessary strain, while the adjustable stock allows quick posture adaptations for standing or prone shooting.
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Dynamic Adaptability: Retains precision even during transitions between skiing and shooting
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Environmental Stability: Performs reliably in temperature extremes, humidity variations, and outdoor conditions
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Endurance Testing: Engineered to maintain accuracy across long practice sessions and multiple competitions
Ergonomic Advantage
The rifle’s ergonomic design is central to its performance. Its custom-fit stock, adjustable cheekpiece, and precision trigger allow shooters to maintain natural posture and optimal alignment. This minimizes fatigue and improves accuracy, particularly during long-range or rapid-fire sequences.
Comparative Analysis: S400 Biathlon vs. Other Top Biathlon Rifles
When evaluating competitive air rifles, the Air Arms S400 Biathlon stands out for its combination of precision, ergonomics, and reliability.
| Feature | Air Arms S400 Biathlon | Competitor A | Competitor B |
|---|---|---|---|
| Match-Grade Barrel | ✔ Superior accuracy | ✔ Moderate | ✔ Moderate |
| Adjustable Stock | ✔ Fully customizable | ✔ Limited | ✖ Fixed |
| Recoil Management | ✔ Advanced | ✔ Basic | ✔ Basic |
| Ergonomic Grip | ✔ Optimized for comfort | ✔ Standard | ✔ Standard |
| Durability | ✔ Premium materials | ✔ Moderate | ✔ Moderate |
| Accessory Compatibility | ✔ Extensive | ✔ Moderate | ✖ Limited |
Why Choose S400 Biathlon?
While competitors offer basic features, the S400 Biathlon integrates all essential components into a cohesive system. Athletes benefit from precision, customizability, and stability in one package, giving them a measurable edge in both training and competition.
- Precharged pneumatic (PCP)
- (200 bar max fill pressure)
- Bolt-action 5-shot repeater (self-indexing rotary clip)
- Removable air reservoir
- Match sights: globe front accepts inserts, rear diopter (not included)
- 11mm dovetail
- 5-way adjustable match trigger
- Lothar Walther barrel
- White poplar stock
- Cheekpiece adjusts vertically and horizontally
- Buttpad adjusts vertically 4 rotary clips fit in slots in right-hand forearm
- Beautiful deep bluing
- Stock is flawlessly executed
- 29.875″ between front & rear sight positions 10.25″ long accessory rail 12.12″ to 12.50″ length of pull (LOP) 5.15 ft-lbs.
- Includes owner’s manual, 7 Allen keys, four 5-shot clips, fill adapter & spanner (to remove reservoir)
Rear Diopter sight not included
Click here for California’s Proposition 65 warning.- ManufacturerAir Arms
- Caliber .177
- Velocity 564 fps
- Condition New
- Ammo Type Pellets
- Action Bolt-action
- Barrel Style Rifled
- Fire Mode Repeater
- Gun Weight 6.99
- Overall Length 41.00
- Barrel Length 20.50
- Loudness 2-Low-Medium
- Magazine Capacity 0
- Mechanism Pre-charged pneumatic
- Rail 11mm dovetail
- Safety none
- Front Sights Globe w/Aperture Inserts
- Rear Sights none
- Shots per Fill 120
- Trigger Adjustability Five-way adjustable match
- Trigger Action 0
- Use Competition
- Warranty Lifetime limited warranty
Training Tips for Optimal Performance
Maximizing the potential of the Air Arms S400 Biathlon involves focused training strategies. Incorporating these techniques ensures consistent improvement in both accuracy and shooting efficiency.
Core Shooting Techniques
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Breathing Control: Coordinate breath with trigger pull to maintain steady aim
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Trigger Discipline: Use slow, deliberate trigger squeeze to minimize barrel movement
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Follow-Through: Maintain sight alignment after each shot to reinforce consistency
Positioning and Posture
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Prone Position: Use the adjustable stock to achieve optimal body alignment
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Standing Position: Focus on balance and weight distribution to reduce sway
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Transition Drills: Practice moving from skiing to shooting to simulate competitive conditions
Incorporating Accessories for Training
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Laser Alignment Tools: Assist in refining aim and shot placement
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Bipods and Adjustable Stands: Improve stability during extended practice sessions
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Digital Shot Tracking: Analyze performance metrics for long-term improvement
Mental and Physical Conditioning
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Focus Exercises: Enhance concentration and reduce distraction
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Endurance Training: Simulate race conditions to practice accuracy under fatigue
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Visualization Techniques: Mentally rehearse sequences to improve consistency
By integrating these methods, shooters can leverage the full capabilities of the S400 Biathlon, translating its precision engineering into measurable performance gains.
Buyer’s Guide and Conversion-Focused Insights
Who Should Invest in the Air Arms S400 Biathlon?
The rifle is ideal for:
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Competitive biathletes seeking peak performance
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Enthusiasts desiring a precision air rifle for training and recreational shooting
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Shooters who value customizability, comfort, and reliability
Key Considerations Before Purchase
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Fit and Ergonomics: Ensure adjustable components align with your body and posture
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Training Goals: Identify the type of practice and competition environments you will use the rifle in
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Accessory Requirements: Consider scopes, bipods, and transport cases for complete readiness
Maximizing ROI
Investing in the S400 Biathlon is not just purchasing a rifle—it is acquiring a long-term performance partner. The rifle’s durability, combined with accessory compatibility, ensures that athletes can continually refine their setup as skills advance.Biathlon air rifle
Air Arms S400 Biathlon Confidence in Every Shot
Air Arms’ reputation for precision engineering guarantees reliability. Shooters gain peace of mind knowing that every adjustment, from trigger pull to stock alignment, is engineered for optimal performance.Air Arms S400 Biathlon
Air Arms S400 Biathlon – Safety, Reliability, and Personalization
Safety Features of the Air Arms S400 Biathlon
The Air Arms S400 Biathlon integrates multiple safety mechanisms to ensure the shooter remains protected without compromising performance. Safety is central to both training and competition, and Air Arms has engineered the S400 with precision and reliability in mind.
Air Arms S400 Biathlon Automatic Safety Mechanism
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Engages immediately upon cocking, preventing accidental discharge
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Provides peace of mind during handling and transport
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Can be disengaged quickly and intuitively for shooting readiness
Air Arms S400 Biathlon Precision Engineering Reduces Malfunctions
Every component is manufactured to exacting tolerances, significantly minimizing the chance of misfires or jams. From the trigger assembly to the barrel alignment, quality assurance ensures reliable operation shot after shot.
Safe Storage and Handling
The rifle’s design supports safe storage, transport, and handling. Ergonomic features and intuitive controls reduce human error during loading, unloading, and adjustments. This focus on safety allows athletes to focus on shooting performance with confidence.
Air Arms S400 Biathlon Reliability and Durability
Engineered for Consistent Performance
The Air Arms S400 Biathlon is built to deliver consistent results across thousands of shots. Its match-grade barrel, precision-fit components, and durable construction ensure that accuracy is maintained throughout extended use.
High-Quality Materials
Air Arms utilizes only premium-grade metals and synthetic materials to optimize longevity and performance. The barrel is resistant to wear, while the stock and grips endure rigorous handling without warping or degradation.
Air Arms S400 Biathlon Environmental Resistance
The S400 Biathlon performs reliably under a variety of environmental conditions. Moisture, temperature fluctuations, and outdoor exposure do not compromise function. This ensures shooters maintain confidence in their equipment regardless of location or weather.
Longevity and Maintenance
Routine maintenance is simplified thanks to accessible components and clear design. The rifle retains peak performance for years when proper care is observed. Additionally, Air Arms provides comprehensive guidelines for cleaning and upkeep, further enhancing long-term reliability.Air Arms S400 Biathlon
Accessories for the Air Arms S400 Biathlon
To optimize performance and adapt to varying competition or training needs, the S400 Biathlon supports a wide range of accessories:
Scope and Sighting Options
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Precision scopes improve target acquisition at varying distances
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Iron sights provide reliable backup options for versatile shooting conditions
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Quick-adjust mounts allow seamless transitions between sighting systems
Bipods and Shooting Stands
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Provide enhanced stability for precision shots
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Adjustable designs accommodate different shooting positions and heights
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Lightweight yet sturdy construction ensures portability without sacrificing support
Stock and Grip Customization
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Optional adjustable stocks allow fine-tuning of fit and ergonomics
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Grip alternatives enhance comfort and control for diverse hand sizes
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Modular components ensure the rifle adapts to evolving user preferences
Ammunition and Pellets
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Optimized pellet selection enhances consistency and accuracy
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Compatible with match-grade pellets to maintain peak performance
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Variety in pellet type allows shooters to adapt to different competition conditions
Transport and Storage Accessories
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Protective cases prevent damage during transport
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Custom foam inserts secure rifle components and accessories
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Lightweight, durable materials support both ease of transport and protection




Personalization and Customization
Tailoring the Rifle to the Shooter
Every athlete is unique, and the S400 Biathlon reflects this principle. Its adjustable components ensure a rifle that fits individual needs perfectly:
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Cheekpiece Adjustments: Align the shooter’s eye with the sighting system for optimal targeting
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Buttpad Modifications: Customize length of pull and shoulder fit to improve comfort and stability
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Trigger Settings: Fine-tune pull weight and travel distance for consistent release
Air Arms S400 Biathlon Enhancing Ergonomics
Custom grips and stock options allow shooters to maintain a natural wrist and arm position. This reduces fatigue during long practice sessions or competitions and promotes consistent shot execution.Lightweight air rifle
Adaptability Across Conditions
Shooter preferences and environmental conditions vary, and the S400 Biathlon accommodates both. Accessories such as adjustable sights, modular stocks, and varied pellet types enable athletes to modify their setup for maximum performance in any context.
Air Arms S400 Biathlon Conversion-Focused Insight
By investing in the S400 Biathlon and pairing it with compatible accessories, shooters unlock enhanced precision, comfort, and reliability. The ability to tailor the rifle ensures that each athlete can perform at their absolute best, whether in training or competitive environments.
Performance-Enhancing Additions
Training Aids
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Laser alignment tools assist in developing consistent aiming techniques
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Target systems for indoor or outdoor practice improve shot accuracy over time
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Adjustable stands simulate competition shooting positions for realistic practice
Competitive Edge Accessories
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Weight kits balance the rifle for specific biathlon requirements
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Dampening systems further minimize recoil during rapid sequences
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Specialized grips improve control for athletes under fatigue or stress
Integrated Tech Options
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Some models support digital shot tracking for precision analysis
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Data integration allows for long-term performance improvement
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Modular upgrades enhance the rifle’s utility across various competition formats
Reliability in Competitive Conditions
Consistency Under Pressure
The S400 Biathlon’s performance does not waver under competitive conditions. Its ergonomic design, precision barrel, and advanced recoil system combine to ensure that shooters can focus on technique rather than compensating for equipment variability.
Endurance Across Multiple Events
Athletes benefit from the rifle’s ability to maintain peak performance across successive races or training sessions. Lightweight yet durable, the S400 Biathlon allows for extended use without fatigue or mechanical failure.
Support and Maintenance
Air Arms provides detailed maintenance guides and service options, ensuring that the rifle continues to perform at a high level over its lifespan. This comprehensive support contributes to the overall reliability of the system.








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