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A Message From Mike...

Welcome to our TKO Airgun Products website.
We began making airgun products about the time PCP airguns were really coming into vogue, around 2005. We started with a few trigger mod parts that we made using water-jet technology. From there, we started getting calls for tuning services and airgun moderators. Since 2008 (when we began keeping production records) we have manufactured and sold over 75,000 airgun moderators. We constantly try new techniques and processes with the goal to improve on the performance of our products, while keeping prices affordable. We recently changed the way we bore the collars on the larger diameter moderators to improve barrel fit.


I'm proud to say that the Discovery air rifle and Crosman air pistol moderators we make have hundreds of hours of ongoing development, including internal design changes, stage shape and spacing, step reamer changes ... and the results of that time and effort are evident in the performance of those small diameter TKO Moderators. The lessons learned translate over to our other large diameter products, too.

Thanks for visiting our website, check out our News Blog, Gallery (best viewed on desktop computers)FAQs, and don't hesitate to call or e-mail to learn more, or just to chat about airguns!

While you are browsing the internet, visit our website ( for our 3D printed airgun silencers and parts!


Thanks and best regards


VEi/TKO Design

Our Products...

We can make our TKO Stage-V LDCs, air strippers, half-shrouds and full shrouds for a wide range of PCP and Co2 air rifles and air pistols, including but not limited to:

  • Benjamin Maximus and DiscoveryCroman 2240, 2250, 2260, Benjamin Marauder Pistol & Marauder Rifle.

  • BSA Sportsman HV, Lonestar .25 and .22, BSA Ultra.

  • Evanix rifles and pistols.

  • Hammerli Pneuma (Threaded 1/2-20 UNF), and Hammerli 850 Magnum (slip-on, non-threaded).

  • Hatsan air rifles and pistols.

  • KRAL Air Rifles.

  • and many others, please call ... We can develop a TKO Moderator for your special project.

  • Check out our Gallery for more ideas for your airgun hobby.

  • NOTE: We don't currently make our TKO VMods for the Korean (Sam Yang, etc.) or most break barrel, springer/piston/Nitro airguns.


We occasionally make various trigger parts for the Crosman 22** type of pistols. Our 1911 Trigger design is an easy drop-in enhancement.

Currrently, our Tuning Service is by reservation only. We have experience in updating and enhancing a wide variety of air rifles. We specialize in an affordable Crosman 22** pistol tuneup, Discovery and Maximus rifle tuneups. Call for more info!


Find us on YouTubeGoogle and many of the airgun forums for more information, reviews, tips and tricks and more!

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