Kral Arms Knight S Bottle Regulator Kit

The “MK11” Bottle Regulator — Precision Set for Your PCP Airgun

Designed by Robert Lane, the “MK11” is an externally mounted regulator for PCP airguns fitted with buddy bottle reservoirs. It is designed to make better use of the air available in the bottle while maintaining a more consistent pressure to the firing system.

An unregulated PCP typically delivers its most consistent performance through a relatively limited portion of its available air charge. As the bottle pressure changes, so does the pressure available to the firing system, resulting in a gradual change in shot performance.

The MK11 regulates the air supplied from the buddy bottle to the firing system, allowing a much greater proportion of the bottle's usable air capacity to be used within a controlled pressure range. This helps maintain more consistent shot performance throughout the regulated portion of the fill.

The result is less shot-to-shot variation, greater repeatability and tighter groups down range. For the serious shooter, that consistency makes it easier to reproduce the same shot time after time and get the most from the accuracy potential of the airgun.

Each regulator is individually set by Robert Lane to suit your airgun and shooting requirements. Your regulator is supplied set to the pressure or power specification you provide.

Key Benefits

• Improved Shot-to-Shot Consistency: Regulated air delivery helps maintain a more consistent pressure to the firing system, reducing variation between shots.
• Greater Usable Air Capacity: The regulator allows a greater proportion of the buddy bottle's air capacity to be used within the regulated pressure range, rather than relying on the relatively narrow sweet spot of an unregulated PCP.
• Increased Shot Count: By making more effective use of the available air, the MK11 can provide substantially more consistent shots per fill, depending on the airgun, regulator setting and overall tune.
• Tighter Groups: Reduced shot-to-shot variation improves repeatability, helping the shooter maintain tighter groups at distance.
• Set to Your Requirements: Each regulator is individually set by Robert Lane to the pressure or power specification you provide.
• Wide Pressure Range: Adjustable from 20–180 Bar (290–2610 PSI), providing a wide range of settings for different PCP applications and power levels.

External Installation & Adjustable Design

The MK11 is designed to fit externally between the buddy bottle and the airgun's action. Once installed, the regulator controls the pressure supplied from the bottle to the airgun.

The regulator incorporates an 8mm Foster quick-fill nipple with dust cover and a mini pressure gauge, allowing you to monitor the bottle fill pressure directly from the regulator.

The regulator's positioning can be adjusted to suit both left- and right-handed users. Once installed, the airgun's existing pressure gauge displays the regulated output pressure, while the gauge on the MK11 displays the bottle fill pressure.

Important: After installing the MK11, the buddy bottle must be filled through the Foster quick-fill connection on the regulator. Do not use the original bottle fill connection.

Precision Manufactured & Tested

The MK11 is CNC manufactured from high-quality materials and engineered for reliable, repeatable performance.

Every regulator is individually checked and tested before dispatch. Each unit is set to the required specification and backed by a 2-year warranty.

What's Included

• “MK11” External Buddy Bottle Regulator with medium standoff
• 8mm Foster quick-fill nipple with dust cover
• Mini pressure gauge
• Spare O-ring seal kit
• Silicone lubricant
• Installation guide with downloadable manual

Important Information

When ordering, please provide your airgun model, calibre and required power or pressure setting. Where applicable, specify your required ft-lb / Joules power or Bar / PSI pressure setting.

If you're unsure which setting is appropriate for your airgun or shooting requirements, please contact us before ordering.