ADX Line of Firearms | Official Press Release
Posted by Emma Roy on 4th Sep 2026
Since SHOT SHOW 2026, TANDEMKROSS has gone from manufacturing accessories and parts, to launching their first ever rifle (TKX22 Light Rifle), to now launching a full suite of firearms. TANDEMKROSS is now happy to officially release the ADX.
Available at launch as a competition-ready rifle, braced or braceless pistol, SBR, or even barreled actions, the ADX line is ready for a vast array of applications. Covered in M-LOK®, dripping in picatinny, and rife with adjustability, the ADX is begging to be customized and ready to be put to the test.
Advantage X (ADX for short) is the result of bringing rimfire into the modern age. While compatible with Ruger® 10/22® magazines and accessories, the ADX features left-hand charging that introduces a bolt lock incorporated into the charging handle. Locking the bolt open is now easier than ever before. Much like an MP5, closing the bolt can be done with a satisfying slap.
Even the less enjoyable parts of firearms recreation are made easier with the ADX. Quickly field strip your gun with just the removal of three pins! Thanks to the unique features of the Manticore X Lower and ADX Receiver, cleaning and maintenance have never been simpler.
The modern controls and features of the ADX line also include ambidextrous rotary safety selectors, extended bi-directional magazine releases, pull weight adjustable triggers, trigger over-travel adjustability, reversible QD sling mounts, configurable and replacable stock or brace mounting solutions, and more!
Optics and other accessories can additionally be mounted to the M-LOK® on the barrel or forend as well as the integrally machined picatinny rail on the receiver. Suppressors and other muzzles devices will also feel right at home on the barrel with its 1/2"x28 standard muzzle threads.
The ADX is what happens when the modern features you expect are finally brought to the world of rimfire. Why should anyone settle for anything less?
