475mm S+ RETROFIT KIT for S&T and Snow Wolf Kar98K (Ver.2026)

The complete T.N.T. S+ 475mm Retrofit Kit VER.2026 is designed for Snow Wolf Kar98K (SW 98K) airsoft rifles. The set includes a new-generation CNC-machined Hop-Up chamber, a dedicated T.N.T. H.L.R. SW 98K 60° Hop-Up bucking and a precision 475mm T.N.T. Double I/D Air-cushion inner barrel.

The Hop-Up chamber is precision CNC-machined as a one-piece unit. Its rigid one-piece construction and precise tolerances minimize unwanted play and provide stable inner barrel positioning.

The 2026 version uses a dual inner barrel retention system. Side-lock positioning ensures correct barrel alignment, while a clamp ring provides additional secure fixation. This design minimizes unwanted barrel movement inside the chamber and contributes to consistent performance.

The Hop-Up uses a TDC (Top Dead Center) pressure adjustment system, providing stable and consistent pressure on the Hop-Up bucking. Revised feeding geometry ensures correct BB positioning inside the chamber, contributing to more consistent shooting performance and a stable trajectory.

The kit includes a dedicated T.N.T. H.L.R. SW 98K 60° Hop-Up bucking. The chamber requires a dedicated T.N.T. bucking. When replacing the bucking, use TNT-HLRRUB-SW98K-60.

The kit also includes a precision T.N.T. Double I/D Air-cushion inner barrel with a length of 475 mm. The barrel is made of bronze and features a chemical nickel-plated surface.

Features:

• Retrofit Kit VER.2026 for Snow Wolf Kar98K.
• T.N.T. Double I/D Air-cushion 475 mm inner barrel.
• Bronze inner barrel with chemical nickel-plated surface.
• Precision CNC-machined one-piece Hop-Up chamber.
• Dual inner barrel retention system.
• Side-lock barrel positioning.
• Clamp-ring barrel fixation.
• TDC (Top Dead Center) Hop-Up adjustment.
• Revised feeding geometry for consistent BB positioning.
• Minimized unwanted inner barrel play.
• Dedicated T.N.T. H.L.R. SW 98K 60° Hop-Up bucking.

Compatibility:

• Snow Wolf Kar98K / SW 98K.

Important:
This Retrofit Kit is designed for Snow Wolf Kar98K. Snow Wolf 98K and S&T 98K versions have different specifications and are not interchangeable. Please check the manufacturer and version of your rifle before ordering.

Package includes:

• 1× T.N.T. SW 98K Hop-Up Chamber VER.2026.
• 1× T.N.T. H.L.R. SW 98K 60° Hop-Up bucking.
• 1× T.N.T. Double I/D Air-cushion 475 mm inner barrel.

Installation:
Due to dimensional differences and manufacturing tolerances between individual airsoft rifles, minor fitting adjustments or modifications may be required during installation. For optimal performance, the manufacturer recommends installation by users with basic airsoft DIY experience or by a professional airsoft technician.