In the UK, all new Rifles, Air-Rifles and Air-Pistols must be bought face to with a registered Firearms Dealer, if you wish to purchase any of the above you will need to provide us with information of who and where it is to be sent, once contact has been made with the RFD and they have agreed to accept the item for you we can begin to arrange the delivery. Please note, there is usually a £25 handling fee for this service. Any licencing needs such as entering details to a firearms licence will need to be done before the firearm is sent out. Your licence will need to be sent in to us using our registered office address, shown on your invoice.

Enhance your sight picture and reduce eye fatigue with this premium Gehmann adjustable iris, designed for target rifle shooters who demand maximum optical performance and precision.
Featuring the renowned Gehmann 550 iris, this unit offers a continuously adjustable aperture from 0.5mm to 3.0mm, allowing you to optimise your sight picture for varying lighting conditions and target contrasts.
The integrated dual polarising filter system provides exceptional control over light transmission and glare:
The filters can be used independently or together, giving you complete flexibility. The unit can also be used as a standard adjustable iris without engaging either polariser. Ideal for competitive target rifle shooters seeking superior control over aperture size, brightness, glare reduction and eyesight correction in one precision-engineered sighting accessory.
The Gehmann 556 Rear Sight Anti-Glare Tube is a lightweight, precision-machined accessory designed to reduce stray light entering the rear sight, improving sight picture contrast and helping shooters maintain a more consistent aiming image. Available in multiple lengths, it allows competitors to fine-tune their sight setup to suit individual preferences and changing lighting conditions.
Manufactured from lightweight aluminium, the 556 Anti-Glare Tube adds minimal weight to the rifle while providing effective protection against unwanted reflections that can reduce sight clarity. Its compact design integrates seamlessly with compatible rear sights, making it suitable for both competition and training use.
Each tube features a precision-cut M9.5 x 1 thread for secure attachment to compatible rear sight irises and accessories. The tubes can also be threaded together, allowing shooters to create custom extension lengths for enhanced flexibility. In addition to reducing glare, they can be used as a rear sight extension, increasing the distance between the shooter's eye and the rear aperture to suit individual shooting positions and visual requirements.
Available in 25mm, 35mm and 50mm lengths, the Gehmann 556 Rear Sight Anti-Glare Tube provides a simple yet highly effective way to customise your rear sight system for improved comfort, consistency and optical performance.
Available Lengths
Thread Specification
The Gehmann 558 Front Sight Anti-Glare Tube is a versatile sight accessory designed to minimise stray light entering the foresight, improving contrast and providing a cleaner, more consistent sight picture. Ideal for precision target shooting, it helps reduce glare and distractions, allowing shooters to maintain focus on the foresight and target under a wide range of lighting conditions.
Precision-machined to Gehmann's exacting standards, the 558 Anti-Glare Tube is compatible with a broad range of front sight systems, making it an excellent choice for both upgrading existing equipment and expanding the functionality of modern sight assemblies.
The tube offers multiple mounting options for maximum compatibility. It can be push-fitted to earlier foresight irises that do not feature internal threading, while also incorporating an internal thread that allows direct attachment to M18 threaded accessories. When used with Gehmann M18 foresight irises, the optional Gehmann 5018 collar is required to ensure correct installation. The 558 is also fully compatible with Gehmann M18 and M22 foresight lenses, providing a secure and adaptable solution for a variety of competition sight configurations.
Whether used to reduce glare on bright outdoor ranges or to refine the sight picture for indoor competition, the Gehmann 558 Front Sight Anti-Glare Tube is a practical upgrade for shooters seeking improved optical performance and greater versatility from their foresight system.The Gehmann Front Extension Tube is a precision-engineered accessory designed to enhance sight picture clarity by improving the shooter's focus on the foresight while maintaining a sharp target image. Mounted directly to the front of the rear sight, it helps optimise visual alignment, making it an ideal addition for precision target rifle shooters seeking greater consistency and accuracy.
Manufactured to Gehmann's renowned standards, the extension tube features a durable, lightweight construction that integrates seamlessly with compatible rear sights without adding unnecessary bulk to the rifle.
The front end is fitted with a precision-machined thread, allowing the attachment of compatible sight accessories such as anti-glare tubes and optical components. This modular design gives shooters the flexibility to tailor their sighting system to suit different lighting conditions and competition disciplines.
A fluted neck design provides improved grip during installation and removal while ensuring a secure fit. For Feinwerkbau rear sights, a suitable adaptor is required for compatibility.
Whether used for ISSF competition, club shooting or training, the Gehmann Front Extension Tube offers a simple yet highly effective way to improve sight alignment and expand the versatility of your rear sight system.
The Gehmann 563 Rear Sight Iris combines a precision adjustable iris with an integrated six-colour filter system and a single polarising filter, giving target shooters greater control over light, contrast and glare. Based around the renowned Gehmann 510 iris, it is designed to optimise the sight picture in a wide variety of lighting conditions, helping to achieve maximum clarity and consistency during training and competition.
The iris aperture is adjustable from 0.5mm to 3.0mm, allowing shooters to fine-tune depth of field and target definition. Six optically flat glass colour filters—Yellow, Light Green, Orange, Purple, Dark Grey and Light Grey—can be individually positioned to enhance contrast, while the integrated single polarising filter reduces distracting reflected light by filtering unwanted reflex rays through embedded quartz crystals. The colour and polarising filters can be used independently or in combination, or the unit can simply be used as a standard adjustable iris.
A locking collar enables precise alignment of the reference V-mark for repeatable positioning, while laser-engraved markings provide clear adjustment references. The removable steel threaded connector allows additional optical accessories, such as the Gehmann 0.0 Dioptre, to be fitted when required. Finished in an attractive black and silver anti-reflective coating with matt-treated internal and external surfaces, the 563 minimises glare for a clean, distraction-free sight picture.
Compatible with all major target rifle rear sights using the M9.5 × 1 thread, the unit is supplied complete with an instruction manual.
The 565 Rear Sight Iris combines a precision adjustable aperture with an advanced colour filter and twin polarising filter system, allowing shooters to optimise their sight picture for a wide range of lighting conditions. Incorporating the patented Gehmann 510 iris, the aperture is adjustable from 0.5mm to 3.0mm, providing precise control over depth of field and target clarity.
Six optically flat glass colour filters can be selected individually to enhance contrast, while the independently adjustable twin polarising filters help reduce distracting reflections and flickering light. By adjusting the position of the two polarising filters relative to each other, light transmission can be continuously varied from approximately 90% down to 10%, enabling precise control of image brightness to suit changing conditions.
The filters may be used individually or in combination, or the unit can simply be used as a standard adjustable iris. A removable threaded connector also allows compatible accessories, such as the Gehmann 0.0x Diopter, to be fitted, while the anti-reflective finish and laser-engraved markings ensure excellent durability and ease of use.Enhance your optical performance with this precision-engineered adjustable iris, featuring the patented 510 Iris for exceptional control and versatility.
Key Features:
The Gehmann 566-579 Rear Sight Iris combines a precision adjustable iris, integrated six-colour filter system and advanced cylindrical vision correction in one highly versatile unit. Designed for competitive target shooters, it provides exceptional control over sight picture, light transmission and visual correction, helping to achieve the clearest possible view of the target and sights.
The adjustable iris offers a wide aperture range from 0.5mm to 3.0mm, allowing the sight picture to be optimised for changing lighting conditions while maintaining precise, repeatable adjustment. Six optically flat glass colour filters—Yellow, Light Green, Orange, Purple, Dark Grey and Light Grey—can be accurately positioned to enhance contrast and improve target definition in a variety of shooting environments. The unit can also be used as a standard iris without any filter selected.
Incorporating Gehmann's innovative 579 cylindrical correction system, this model allows shooters to compensate for diagnosed axial and spherical vision defects directly through the rear sight. This advanced optical correction provides a practical alternative to dedicated shooting lenses, enabling precise visual adjustment without compromising the sight picture.
A locking collar ensures accurate positioning of the reference V-mark, while laser-engraved markings allow repeatable settings. The removable steel threaded connector enables additional accessories, such as the Gehmann 0.0 dioptre, to be fitted when required. Finished with a special matt anti-reflective coating on all internal and external surfaces, the 566-579 minimises glare and unwanted reflections for maximum optical performance.
Compatible with all major target rifle brands via its M9.5 × 1 thread, the unit is supplied complete with an instruction manual.
The Gehmann 566-S Rear Sight Iris is a premium adjustable rear sight iris featuring an integrated six-colour filter system, allowing shooters to optimise contrast and sight clarity for a wide range of lighting conditions. Combining the proven performance of the renowned Gehmann 510 iris with precision optical filters, it offers exceptional versatility for both training and competition.
The iris aperture is adjustable from 0.5mm to 3.0mm, enabling fine control of depth of field and target definition. Six optically flat glass colour filters—Yellow, Light Green, Orange, Purple, Dark Grey and Light Grey—can be individually selected and precisely positioned to enhance contrast and reduce glare. When filters are not required, the unit functions perfectly as a standard adjustable iris.
A locking collar allows accurate positioning of the reference V-mark for consistent alignment, while the removable steel threaded connector enables additional optical accessories to be fitted, including the Gehmann 50300-0, 0.0 Dioptre or 50309. Finished in an attractive combination of matt black and matt silver, the iris features a matt black centre section to minimise reflections and maintain a clear, distraction-free sight picture.
Supplied complete with an instruction manual, the 566-S is an excellent choice for target shooters seeking greater control over their visual performance.
The Gehmann 568MC is a premium rear sight iris designed for competitive target rifle shooters who demand the highest level of optical control. Combining a precision adjustable iris with an innovative 12-colour filter system, twin polarising filters and the ability to add optional corrective optics, it offers exceptional versatility in all shooting conditions.
At its core is the Gehmann 510 adjustable iris, providing a continuously adjustable aperture from 0.5mm to 3.0mm. This allows shooters to fine-tune depth of field and achieve the optimum sight picture for changing light conditions and target contrast.
The advanced 12-colour filter system features two independently adjustable banks of precision optically flat glass filters:
Filter Bank 1
Filter Bank 2
Each filter bank can be used independently or combined with the other, providing up to 48 different colour combinations to optimise contrast and target definition. The unit can also be used as a standard adjustable iris without engaging any filters.
The integrated twin polarising filters provide outstanding glare reduction and brightness control:
All colour filters and polarising filters can be used individually or in combination, giving virtually unlimited flexibility to tailor your sight picture.
To help maintain a consistent shooting position, the 568MC is supplied with five external push-fit rubber eye rings, allowing shooters to achieve repeatable eye placement from shot to shot. The removable threaded steel connector also allows compatible Gehmann optical accessories, such as the 0.0 dioptre, to be fitted, making the sight even more adaptable to individual requirements.
Offering an exceptional combination of aperture adjustment, extensive colour filtering, glare reduction and upgrade flexibility, the Gehmann 568MC is an ideal choice for serious competition shooters looking to achieve the perfect sight picture in any lighting conditions.The 569 Rear Sight Iris with Colour and Greyscale Filters combines a fully adjustable iris with a comprehensive dual filter system, allowing shooters to optimise their sight picture for a wide range of lighting conditions. Incorporating the proven Gehmann 510 iris, the aperture is adjustable from 0.5mm to 3.0mm, enabling precise control of depth of field and target clarity.
The innovative twin filter wheels feature twelve optically flat glass filters arranged across two independently adjustable banks. The first bank contains six colour filters, while the second offers six blue and greyscale filters that can be used to enhance or moderate the effect of the selected colour filter. This flexibility allows shooters to tailor contrast, brightness and definition as lighting conditions or visual fatigue change throughout the day.
Particularly effective on indoor ranges with artificial lighting, it can also be used as a standard adjustable iris when filters are not required. The removable threaded connector accepts compatible accessories, including the Gehmann 0.0x Diopter, while the anti-reflective finish and laser-engraved markings provide excellent usability and optical performance.
The Gehmann 575 is a premium rear sight iris designed for discerning target rifle shooters who require ultimate control over aperture size, light transmission and colour filtering. Combining Gehmann's patented adjustable iris with an advanced filter system, it delivers exceptional flexibility in all lighting conditions.
At its heart is the patented Gehmann 565 iris, offering a continuously adjustable aperture from 0.5mm to 3.0mm, allowing you to fine-tune your sight picture for maximum clarity and precision.
The integrated six-position colour filter system features precision-ground, optically flat glass filters, enabling you to optimise target contrast for changing light conditions. Available filter colours include:
The dual independently adjustable polarising filters provide outstanding control over glare and brightness:
The colour filters and polarising filters can be used individually or combined, giving shooters complete flexibility to create the ideal viewing conditions. The unit can also be used as a standard adjustable iris without engaging any filters.
Designed for serious competitive shooters, the Gehmann 575 offers unrivalled versatility, allowing precise adjustment of aperture size, colour contrast, glare reduction and brightness to achieve the clearest possible sight picture in any shooting conditions.Designed for the serious competition shooter, this premium Gehmann rear sight iris combines advanced optical technology with unrivalled adjustability. Featuring the patented Gehmann 565 iris, integrated colour filters, twin polarising filters and innovative corrective optics, it provides a highly customisable sight picture while allowing shooters to compensate for diagnosed vision imperfections.
The patented Gehmann 565 iris offers a continuously adjustable aperture from 0.5mm to 3.0mm, enabling precise control of depth of field and target clarity in changing lighting conditions.
The integrated six-position colour filter system incorporates precision optically flat glass filters that can be accurately selected to enhance contrast and improve target definition. Filter colours include:
The dual independently adjustable polarising filters provide exceptional control over glare and brightness:
All colour and polarising filters can be used independently or combined to create the optimum viewing conditions. The unit may also be used as a standard adjustable iris without engaging any filters.
A standout feature of this model is its revolutionary corrective optics, specifically designed to compensate for diagnosed axial and spherical vision errors, helping shooters achieve a clearer and more precisely focused sight picture. The optical system provides 0.0x magnification (no image enlargement) with an impressive -5.0 to +5.0 dioptre adjustment, making it suitable for a wide range of eyesight corrections.
The innovative corrective optical system is exclusive to Gehmann and is protected by patent, making it unavailable from any other manufacturer. The sight is fully approved for competition under ISSF and DSB regulations. Developed for elite target shooters who demand the highest level of optical performance, this Gehmann rear sight iris offers outstanding control over aperture size, colour filtering, glare reduction and eyesight correction, helping you achieve the clearest possible sight picture and maximum shooting precision.

In the UK, all new Rifles, Air-Rifles and Air-Pistols must be bought face to with a registered Firearms Dealer, if you wish to purchase any of the above you will need to provide us with information of who and where it is to be sent, once contact has been made with the RFD and they have agreed to accept the item for you we can begin to arrange the delivery. Please note, there is usually a £25 handling fee for this service. Any licencing needs such as entering details to a firearms licence will need to be done before the firearm is sent out, *your licence will need to be sent in to us using our registered office address, shown on your invoice.
© 2023 All rights reserver. Lacey's Shooting Services. Powered by GFD
In the UK, all new Rifles, Air-Rifles and Air-Pistols must be bought face to with a registered Firearms Dealer, if you wish to purchase any of the above you will need to provide us with information of who and where it is to be sent, once contact has been made with the RFD and they have agreed to accept the item for you we can begin to arrange the delivery. Please note, there is usually a £25 handling fee for this service. Any licencing needs such as entering details to a firearms licence will need to be done before the firearm is sent out. Your licence will need to be sent in to us using our registered office address, shown on your invoice.

