| Brand | TandemKross |
| Gun Platform | Mark IV |
| Type | Bolt Parts |
By clicking "Yes" I am certifying that I am 18+, and am allowed to access this website and by entering agree with petespillars.com usage/privacy policy, terms and conditions.
By clicking "Yes" I am certifying that I am 18+, and am allowed to access this website and by entering agree with petespillars.com usage/privacy policy, terms and conditions.
By clicking "Yes" I am certifying that I am 18+, and am allowed to access this website and by entering agree with petespillars.com usage/privacy policy, terms and conditions.
Sorry you are not eligible to visit this website.
Please enter valid date of birth.






The TANDEMKROSS HALO Charging Ring provides a larger, more comfortable gripping surface for operating the bolt on compatible Ruger Mark IV, Mark III, and 22/45 pistols.
Designed to address the small factory bolt ears found on Ruger Mark Series pistols, the HALO features a smooth, curved pull-ring design that improves grip and leverage without adding unnecessary bulk.
This TK24N0164BLK1 configuration features lightweight aircraft-grade aluminum construction with a black finish and an ambidextrous design for right- and left-handed shooters.
Ruger Mark Series pistols use a bolt with relatively small rear gripping surfaces. For shooters with larger fingers, reduced hand strength, or difficulty gripping the factory bolt ears, manually operating the bolt can be uncomfortable.
The TANDEMKROSS HALO Charging Handle provides a more accessible gripping surface, making bolt manipulation more comfortable.
Its distinctive circular design offers increased leverage and helps reduce the pinched fingers commonly associated with the factory charging surfaces.
This makes the HALO a useful ergonomic upgrade for recreational shooters, rimfire competitors, and anyone who prefers a more substantial charging handle.
Unlike side-specific charging handles, the HALO uses a symmetrical pull-ring design that can be accessed comfortably from either side.
The rounded profile makes the ring easy to locate, while its smooth, curved surface provides a comfortable contact point.
TANDEMKROSS designed the HALO to remain lightweight and compact enough for use with many conventional pistol holsters. Holster compatibility should be confirmed for the individual firearm and holster combination.
The HALO Charging Ring is manufactured from aircraft-grade aluminum, providing a rigid charging surface without adding significant weight to the rear of the pistol.
Its lightweight design is intended to preserve normal bolt operation while providing a more convenient gripping surface.
The black finish complements the factory appearance of Ruger Mark Series pistols, including Tactical, Target, Hunter, Competition, and 22/45 configurations.
This HALO Charging Ring is designed for compatible Ruger Mark Series pistols, including:
Important: Ruger Mark II models require a different HALO charging ring configuration. Compatibility with specialized aftermarket bolts should be confirmed before ordering.
The HALO Charging Ring complements a variety of Volquartsen replacement parts and upgrade kits for compatible Ruger Mark IV pistols.
Pete's Pillars carries additional TANDEMKROSS Ruger Mark IV and 22/45 upgrades, including ergonomic controls, triggers, sights, magazine accessories, and replacement components.
Fitment Reminder: Ruger Mark III, Mark IV, and 22/45 pistols share some components, but not all aftermarket parts are interchangeable between generations or frame configurations. Confirm compatibility for each accessory.
Pete's Pillars is an authorized TANDEMKROSS and Volquartsen dealer, offering genuine Ruger Mark Series accessories alongside our own American-made precision components.
Our selection includes charging handles, trigger kits, bolt components, sights, magazines, and practical upgrades for compatible Ruger Mark IV, Mark III, and 22/45 pistols.
Small change. Big impact.
The TANDEMKROSS HALO Charging Ring provides a larger, more comfortable gripping surface for operating the bolt on compatible Ruger Mark IV, Mark III, and 22/45 pistols.
Designed to address the small factory bolt ears found on Ruger Mark Series pistols, the HALO features a smooth, curved pull-ring design that improves grip and leverage without adding unnecessary bulk.
This TK24N0164BLK1 configuration features lightweight aircraft-grade aluminum construction with a black finish and an ambidextrous design for right- and left-handed shooters.
Ruger Mark Series pistols use a bolt with relatively small rear gripping surfaces. For shooters with larger fingers, reduced hand strength, or difficulty gripping the factory bolt ears, manually operating the bolt can be uncomfortable.
The TANDEMKROSS HALO Charging Handle provides a more accessible gripping surface, making bolt manipulation more comfortable.
Its distinctive circular design offers increased leverage and helps reduce the pinched fingers commonly associated with the factory charging surfaces.
This makes the HALO a useful ergonomic upgrade for recreational shooters, rimfire competitors, and anyone who prefers a more substantial charging handle.
Unlike side-specific charging handles, the HALO uses a symmetrical pull-ring design that can be accessed comfortably from either side.
The rounded profile makes the ring easy to locate, while its smooth, curved surface provides a comfortable contact point.
TANDEMKROSS designed the HALO to remain lightweight and compact enough for use with many conventional pistol holsters. Holster compatibility should be confirmed for the individual firearm and holster combination.
The HALO Charging Ring is manufactured from aircraft-grade aluminum, providing a rigid charging surface without adding significant weight to the rear of the pistol.
Its lightweight design is intended to preserve normal bolt operation while providing a more convenient gripping surface.
The black finish complements the factory appearance of Ruger Mark Series pistols, including Tactical, Target, Hunter, Competition, and 22/45 configurations.
This HALO Charging Ring is designed for compatible Ruger Mark Series pistols, including:
Important: Ruger Mark II models require a different HALO charging ring configuration. Compatibility with specialized aftermarket bolts should be confirmed before ordering.
The HALO Charging Ring complements a variety of Volquartsen replacement parts and upgrade kits for compatible Ruger Mark IV pistols.
Pete's Pillars carries additional TANDEMKROSS Ruger Mark IV and 22/45 upgrades, including ergonomic controls, triggers, sights, magazine accessories, and replacement components.
Fitment Reminder: Ruger Mark III, Mark IV, and 22/45 pistols share some components, but not all aftermarket parts are interchangeable between generations or frame configurations. Confirm compatibility for each accessory.
Pete's Pillars is an authorized TANDEMKROSS and Volquartsen dealer, offering genuine Ruger Mark Series accessories alongside our own American-made precision components.
Our selection includes charging handles, trigger kits, bolt components, sights, magazines, and practical upgrades for compatible Ruger Mark IV, Mark III, and 22/45 pistols.
Small change. Big impact.
| Brand | TandemKross |
| Gun Platform | Mark IV |
| Type | Bolt Parts |