Air Arms S400 MPR
Price range: £700.00 through £800.00
Description
Air Arms S400 MPR: Precision, Power, and Performance
The Air Arms S400 MPR stands as a pinnacle of modern air rifle engineering, combining unmatched accuracy, superior ergonomics, and innovative features that appeal to both seasoned shooters and newcomers alike. Crafted with meticulous attention to detail, this rifle ensures every shot delivers consistent performance while maintaining user comfort and control. Transitioning from casual plinking to competitive target shooting, the S400 MPR adapts seamlessly to your needs.Air Arms S400 MPR
Designed for precision enthusiasts, the S400 MPR leverages advanced mechanical engineering to maximize both power and reliability. Its Multi-Pump Rifle (MPR) system allows shooters to select the optimal number of pumps per shot, tailoring velocity and energy for each scenario. Consequently, users gain a unique balance between flexibility and efficiency, achieving superior shot placement every time.Air Arms S400 MPR
Air Arms S400 MPR Key Features at a Glance
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Adjustable Multi-Pump System: Customize your shots with variable pump counts, optimizing both energy and accuracy.
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Precision Rifled Barrel: Achieves exceptional consistency and tight groupings for target shooting or hunting.
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Ergonomic Stock Design: Comfortable, contoured stock accommodates a wide range of shooter physiques.
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Durable Construction: Premium materials ensure longevity, resilience, and reliable performance under various conditions.
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Integrated Safety Mechanism: Built-in safety features promote confidence and responsible handling.
Why Choose the Air Arms S400 MPR?
The S400 MPR transcends traditional air rifles by offering versatility, control, and refined performance in a single package. Users benefit from its intuitive design, which simplifies maintenance and ensures smooth operation over extended periods. Moreover, this rifle caters to both competitive shooters and recreational enthusiasts, making it an inclusive choice for all skill levels.
With the Air Arms S400 MPR, every shot becomes a demonstration of precision, control, and innovation. Whether in a backyard, field, or competitive range, it consistently delivers exceptional results. The combination of adjustable power, accuracy, and user-friendly ergonomics positions it as a must-have for anyone serious about air rifle performance.Air Arms S400 MPR
Air Arms S400 MPR Technical Specifications & Performance
The Air Arms S400 MPR combines precision engineering with robust performance metrics, offering shooters a rifle capable of handling a variety of scenarios. Every component has been meticulously designed to ensure consistency, accuracy, and reliability in each shot. Furthermore, its versatility accommodates both casual plinking and competitive target shooting, making it a standout choice for users of all experience levels.Air Arms S400 MPR
Air Arms S400 MPR Multi-Pump Efficiency
At the core of the S400 MPR lies its Multi-Pump Rifle (MPR) system, which enables shooters to adjust the number of pumps per shot. This feature directly influences velocity, energy, and shot trajectory, allowing tailored performance depending on the intended use. Transitioning from one power setting to another is straightforward, promoting efficiency without compromising accuracy.Air Arms S400 MPR
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Variable Pump Range: 1–10 pumps per shot for customizable energy output.
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Optimized Velocity: Maintains consistency across the entire pumping range.
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Energy Control: Adjust power for indoor or outdoor use, adapting to environmental conditions.
Air Arms S400 MPR Rifled Barrel Precision
Accuracy is paramount, and the S400 MPR addresses this with a precision-engineered rifled barrel. Each barrel undergoes rigorous quality control to ensure tight shot groupings, even under repeated use. Consequently, users can expect consistent performance, whether engaging in target practice or small-game hunting.Air Arms S400 MPR
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Tight Groupings: Exceptional shot placement for competitive or recreational shooting.
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Smooth Bore Transition: Minimizes pellet deformation for reliable trajectories.
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Enhanced Spin Stability: Rifling ensures pellets maintain rotational stability for improved accuracy.
Air Arms S400 MPR Performance Metrics
The S400 MPR excels in delivering measurable, repeatable performance. It balances power, efficiency, and user control, ensuring that every aspect contributes to shooting excellence. Furthermore, its design minimizes vibration and recoil, providing a stable platform for precise aiming.
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Velocity Range: Adjustable based on pump count, offering flexibility for different applications.
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Effective Range: Optimized for accuracy up to medium distances, suitable for target and field use.
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Shot Consistency: Minimal deviation ensures predictable outcomes across multiple shots.
Reliability & Durability
Durability is a hallmark of Air Arms, and the S400 MPR embodies this philosophy. Constructed from high-grade materials and assembled with precision engineering, the rifle withstands the rigors of repeated use while maintaining peak performance. Transitioning from casual use to extended field sessions, users can trust its resilience.
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Premium Materials: Resists wear, corrosion, and mechanical stress.
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Low Maintenance Requirements: Designed for ease of care without sacrificing performance.
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Long-Term Reliability: Maintains accuracy and functionality over time.
Air Arms S400 MPR Maintenance & Longevity
The Air Arms S400 MPR is engineered not only for performance but also for longevity. Designed with precision and durability in mind, this rifle offers low-maintenance operation while retaining consistent accuracy over time. Proper care ensures that each shot remains precise, and the rifle continues to perform optimally through countless sessions.




Easy Maintenance
Air Arms prioritized user-friendly maintenance when designing the S400 MPR. Routine care is straightforward, with simple procedures for cleaning, lubrication, and inspection. Clear access to essential components reduces downtime and keeps the rifle ready for any shooting scenario.
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Accessible Components: Key parts are easily reachable for cleaning and servicing.
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Simplified Lubrication: Minimal effort required to maintain smooth operation.
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Durable Finish: Resists dirt, moisture, and environmental wear.
Built to Last
Durability is a hallmark of the S400 MPR. Constructed from high-quality alloys and reinforced polymers, the rifle withstands repeated use without compromising precision. Its robust design ensures that minor impacts, temperature variations, and extensive handling do not affect performance.
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High-Grade Materials: Supports long-term reliability and resistance to wear.
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Reinforced Mechanisms: Maintains structural integrity even under rigorous use.
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Corrosion-Resistant: Protects internal and external components from environmental damage.
Consistent Performance Over Time
With proper care, the S400 MPR maintains its accuracy, velocity, and smooth operation for years. Regular maintenance routines, combined with the rifle’s inherent durability, ensure that users can enjoy consistent performance without frustration or unexpected malfunctions.Air Arms S400 MPR
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Precision Retention: Barrel and pump system maintain accuracy through extended use.
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Stable Velocity: Consistent shot energy regardless of repeated firing.
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Long-Term Reliability: Trusted for both casual and competitive shooting over time.
Air Arms S400 MPR Maintenance Tips for Optimal Longevity
To maximize the lifespan of your S400 MPR, Air Arms recommends several simple practices:
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Clean the barrel after each session to prevent debris buildup.
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Lubricate moving parts lightly to maintain smooth operation.
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Inspect seals and O-rings regularly for signs of wear.
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Store in a dry, temperature-stable environment to prevent corrosion.
Air Arms S400 MPR Ergonomics & Handling
Comfort and control are central to the Air Arms S400 MPR experience. Designed with shooters in mind, the rifle combines intuitive handling, balanced weight distribution, and a contoured stock that accommodates a wide range of users. Whether engaging in extended target practice or field shooting, the S400 MPR ensures fatigue is minimized while precision remains uncompromised.
Intuitive Stock Design
The ergonomically contoured stock is crafted to support natural aiming and comfortable shoulder placement. Its dimensions are carefully considered, allowing for extended shooting sessions without strain. Additionally, the stock features texturing at strategic points to improve grip and control, even under challenging conditions.
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Comfortable Contours: Fits various hand sizes and body types naturally.
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Enhanced Grip: Textured surfaces promote secure handling in all environments.
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Adjustable Cheekpiece (Optional): Aligns the shooter’s eye with the sight for optimal accuracy.
Balanced Weight Distribution
The S400 MPR’s design ensures weight is evenly distributed, which enhances stability during aiming and firing. This balance is crucial for reducing wobble, improving shot precision, and enabling smoother follow-up shots. Consequently, users gain confidence and control, whether practicing at home or participating in competitive shooting.
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Optimized Center of Gravity: Minimizes fatigue and improves aim consistency.
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Stable Handling: Reduces sway and enhances follow-through.
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Lightweight Design: Supports easy maneuverability without compromising sturdiness.
Smooth Operation & Controls
Every control on the S400 MPR is thoughtfully positioned for intuitive access. Safety mechanisms, the pump handle, and trigger all work seamlessly together, allowing the shooter to maintain focus without distraction. Transitioning between different pump counts or engaging the safety is effortless, promoting a confident and controlled shooting experience.
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Ergonomic Trigger: Provides a crisp, clean break for consistent shots.
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Accessible Safety: Quickly engages or disengages without compromising hand placement.
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Effortless Pump Action: Smooth operation for variable power settings.
Inclusive Handling Features
Recognizing that shooters come in all shapes and sizes, Air Arms designed the S400 MPR to accommodate diverse users. Its adjustable features, ergonomic contours, and intuitive controls make it approachable for beginners while still satisfying experienced marksmen. This inclusivity ensures that the rifle is not only high-performing but also accessible to a broader audience.
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User-Friendly Design: Simple enough for newcomers, refined for experts.
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Adjustable Options: Customizable to match shooter preferences.
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Inclusive Fit: Suitable for a wide demographic of users.
Comparisons to Other Air Arms Models
The Air Arms S400 MPR distinguishes itself within the Air Arms lineup by blending versatility, precision, and user-friendly features. While other models offer specialized strengths, the S400 MPR provides a well-rounded experience that appeals to a broader range of shooters. Comparing key features helps illustrate why this model often emerges as the preferred choice for both enthusiasts and newcomers.
S400 MPR vs. S410
The S410 is a renowned PCP (pre-charged pneumatic) rifle favored for its consistent power and long-range accuracy. However, unlike the S410, the S400 MPR utilizes a Multi-Pump system, allowing users to adjust power dynamically without external equipment. This feature offers greater flexibility for casual shooting, field use, and indoor practice.
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Adjustable Power: S400 MPR allows pump-based control; S410 requires PCP filling.
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Portability: MPR system reduces dependence on compressors or tanks.
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Versatility: Ideal for varied environments, whereas S410 excels primarily in extended-range target shooting.
S400 MPR vs. TX200
The TX200 is a spring-piston rifle known for mechanical reliability and precision. While the TX200 delivers exceptional accuracy, it lacks the adjustable power feature found in the S400 MPR. Consequently, the MPR model offers customized energy output, making it more adaptable for multiple shooting contexts.
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Power Adjustment: S400 MPR offers user-controlled pumping; TX200 has fixed power.
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Recoil Management: MPR system minimizes felt recoil, improving follow-up shot consistency.
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Learning Curve: More intuitive for beginners due to simplified handling and variable power settings.
Why the S400 MPR Stands Out
By merging adjustable multi-pump power, ergonomic handling, and precision engineering, the S400 MPR excels where other models may have limitations. Its inclusive design accommodates a wide range of users, from casual shooters to competitive marksmen, offering performance flexibility without sacrificing reliability.
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User-Centric Design: Suitable for varied skill levels and body types.
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Dynamic Performance: Tailors energy output for different scenarios.
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Balanced Handling: Combines lightweight maneuverability with steady stability.
Overall Advantage
The S400 MPR’s combination of versatility, reliability, and precision ensures it remains a top choice within the Air Arms range. Shooters who prioritize adaptability, consistent performance, and ergonomic comfort find this rifle uniquely suited to their needs. Transitioning between environments—whether indoor ranges, backyards, or outdoor fields—is effortless, enhancing overall shooting satisfaction.
Safety & Control
The Air Arms S400 MPR prioritizes safety without compromising performance. Every feature is designed to provide users with confidence, control, and responsible handling. Whether you are a beginner or an experienced marksman, the rifle ensures safe operation while maintaining precise shot execution.
Integrated Safety Mechanisms
Safety is seamlessly integrated into the S400 MPR’s design. The rifle features a manual safety catch that engages easily and reliably, preventing accidental discharge. Additionally, the pump-action mechanism is engineered to avoid misfires when the rifle is not fully cocked, giving users complete control at all times.
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Manual Safety Catch: Quickly engages or disengages for immediate safety assurance.
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Pump-Action Lock: Prevents accidental firing during partial pumping.
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Fail-Safe Design: Mechanisms ensure safe operation under normal use conditions.
Enhanced User Control
Control is essential for both accuracy and safety. The S400 MPR’s ergonomic stock, balanced weight, and intuitive trigger all contribute to superior handling. These design elements allow shooters to maintain stable aim, execute precise shots, and feel confident in every aspect of operation.
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Ergonomic Grip & Stock: Supports natural positioning and steady aim.
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Crisp Trigger: Offers controlled and predictable shot release.
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Balanced Weight Distribution: Reduces fatigue and improves follow-through accuracy.
Safe Practices Encouraged
Air Arms encourages users to follow standard safety practices while operating the S400 MPR. Clear instructions and guidelines support responsible shooting, ensuring that safety is maintained for both the shooter and bystanders.
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Proper Handling: Always keep the rifle pointed in a safe direction.
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Environmental Awareness: Ensure the area is clear before firing.
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Regular Inspection: Check safety features, trigger function, and pump mechanism before each session.
Confidence in Every Shot
By combining built-in safety features with intuitive control, the S400 MPR allows users to focus on precision without worry. Shooters can enjoy reliable performance while maintaining responsible handling, creating a safer and more enjoyable experience for all skill levels.
400 MPR 10-meter target rifle
- Precharged pneumatic (PCP)
- Single-shot Bolt-action (not adjustable from RH side of gun)
- 7 joules (5.16 ft-lbs.)
- Highly adjustable match trigger (first-stage length, second-stage pull, move up/down, forward/back)
- 11mm dovetail
- Adjustable cheekpiece
- Adjustable buttpad
- 12-groove, nickel-plated Lothar Walther barrel
- Globe front sight accepts inserts
- Removable reservoir with built-in gauge (manometer)
- Lightweight, ambidextrous poplar stock
To fill the gun, unscrew the air reservoir and attach it to the 200-bar DIN hole of a scuba tank or hand pump. The end of the reservoir has a manometer (air pressure gauge), so you’ll always know how much air is left in the tank. The correct air pressure for the MPR is 200 bar (2,900 psi).
Click here for California’s Proposition 65 warning.- ManufacturerAir Arms
- Caliber .177
- Velocity 540 fps
- Condition New
- Ammo Type Pellets
- Action Bolt-action
- Barrel Style Rifled
- Fire Mode Single-shot
- Gun Weight 6.80
- Overall Length 41.75
- Barrel Length 19.25
- Loudness 2-Low-Medium
- Magazine Capacity 0
- Mechanism Pre-charged pneumatic
- Rail 11mm dovetail
- Safety none
- Front Sights Globe w/Aperture Inserts
- Rear Sights Diopter/micrometer adjustable
- Shots per Fill 120
- Trigger Adjustability Five-way adjustable match
- Trigger Action 0
- Use Competition
- Warranty Lifetime limited warranty
Practical Applications & Scenarios
The Air Arms S400 MPR is designed to excel in a wide range of shooting environments, offering versatility and consistent performance. Its adjustable multi-pump system, ergonomic design, and precision engineering make it suitable for target practice, recreational shooting, small-game hunting, and skill development.
Target Practice & Competitive Shooting
For those focused on accuracy and consistency, the S400 MPR provides a reliable platform. Its precision rifled barrel and adjustable power allow shooters to fine-tune their shots for optimal performance. As a result, users can achieve tight groupings and confident aim, whether competing in formal events or practicing at home.
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Indoor & Outdoor Targeting: Adjustable pump settings accommodate various ranges.
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Consistent Accuracy: Maintains tight shot groupings for practice and competition.
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Skill Development: Ideal for honing precision and control at any experience level.
Recreational & Backyard Shooting
The S400 MPR also shines as a recreational rifle. Its user-friendly handling and variable power settings make it safe and enjoyable for casual shooting sessions. Whether engaging in plinking, friendly competitions, or simply enjoying a day outdoors, the rifle delivers reliable performance with minimal effort.Multi-Pump Air Rifle
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Variable Power Settings: Customize velocity for safe backyard or field use.
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Ergonomic Comfort: Enables extended shooting sessions without fatigue.
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Inclusive Design: Accommodates a wide range of users for group activities.
Small-Game Hunting
Equipped with adjustable power and consistent accuracy, the S400 MPR is suitable for small-game hunting. Its precision allows for humane, ethical shots while maintaining control and safety. Transitioning from recreational shooting to hunting scenarios is seamless, ensuring versatility for different outdoor applications.Small-game hunting rifle
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Controlled Power Output: Match pump settings to target requirements.
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Reliable Shot Placement: Ensures effective, ethical hunting outcomes.
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Durable Construction: Withstands field conditions without performance loss.
Skill-Building & Training
Beyond leisure and hunting, the S400 MPR serves as a training tool for developing shooting skills. Its adjustable mechanics encourage experimentation, teaching shooters about shot energy, trajectory, and follow-through. Beginners can learn safely, while advanced users can refine techniques and precision.Air Arms S400 MPR for target practice
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Educational Versatility: Learn the effects of variable pump counts on shot performance.
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Safe Environment: Encourages responsible handling during skill development.
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Enhanced Control: Improves shooting discipline and aim consistency.
Additional information
| Item Condition | New, Refurb |
|---|---|
| Select Caliber | .177 |








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