TNT APS-X HOP-UP SYSTEM H+ RETROFIT KIT

FOR SYSTEMA M4 PTW RIFLES / 370MM

CNC HOP-UP • 6.02MM PRECISION BARREL • TR-HOP BUCKING • COMPLETE PTW RETROFIT PACKAGE

TNT APS-X // SYSTEMA M4 PTW // H+ HOP-UP // 370MM BARREL // 6.02MM BORE // TR-HOP // CNC MACHINED

Take your compatible Systema M4 PTW hop-up and barrel assembly to a more refined level with the TNT APS-X Hop-Up System H+ Barrel and TR-HOP Bucking Retrofit Kit – 370mm.

Designed as a precision upgrade package for compatible Systema M4 PTW rifles, this kit brings together three important components: a CNC-machined APS-X H+ hop-up unit, 370mm 6.02mm precision inner barrel, and TNT TR-HOP bucking.

Rather than upgrading the hop chamber, barrel, and bucking separately, TNT combines them into a matched retrofit package designed around improved adjustment, consistency, and airsoft BB stabilization.

Finished with TNT’s distinctive red anodized hop-up unit, the APS-X H+ kit is an excellent option for PTW owners looking for a premium barrel and hop-up upgrade without assembling individual components from multiple manufacturers.

APS-X H+

PRECISION STARTS AT THE HOP-UP

The heart of the retrofit kit is TNT’s:

APS-X H+ HOP-UP SYSTEM

The hop-up chamber is precision CNC machined, providing a rigid and precisely manufactured foundation for hop adjustment.

Fine hop adjustment is important because even small changes in pressure can affect BB trajectory and consistency.

By using a CNC-machined unit, TNT creates a hop-up platform intended to offer precise, repeatable adjustment for compatible Systema M4 PTW rifles.

The chamber is completed with a distinctive red anodized finish, giving the internal assembly TNT’s recognizable premium appearance while providing additional surface protection.

6.02MM // PRECISION INNER BARREL

The APS-X H+ system is paired with a:

370MM / 6.02MM PRECISION INNER BARREL

A quality inner barrel is a critical part of an airsoft rifle’s overall consistency.

The TNT barrel uses a 6.02mm precision bore, designed to provide controlled BB travel through the barrel when used with quality ammunition and a properly configured hop-up system.

At 370mm in length, this specific version is intended for compatible Systema M4 PTW configurations requiring the corresponding barrel length.

The combination of the precision barrel and APS-X hop-up creates a complete assembly rather than treating each component as an unrelated upgrade.

TR-HOP // TNT BUCKING INCLUDED

Completing the system is the included:

TNT TR-HOP BUCKING

The bucking is responsible for transferring hop pressure to the BB, making it an important part of the overall hop-up system.

By including TNT’s TR-HOP bucking with the APS-X chamber and 6.02mm barrel, the retrofit kit provides the core components required for a coordinated hop and barrel setup.

This also eliminates the need to immediately source a separate bucking when assembling the kit.

For Systema PTW owners looking to refresh or upgrade multiple parts of the hop assembly at once, the complete package provides a convenient solution.

BUILT FOR // SYSTEMA M4 PTW

This retrofit kit is specifically intended for:

SYSTEMA M4 PTW RIFLES

PTW platforms use specialized components and should not be treated as interchangeable with conventional M4 AEG systems simply because the external platforms may look similar.

The TNT APS-X H+ Retrofit Kit is designed around the Systema M4 PTW architecture, making platform compatibility an important consideration before purchasing.

The 370mm barrel length should also be checked against the specific configuration being upgraded.

PERFORMANCE ARCHITECTURE

THREE COMPONENTS. ONE MATCHED SYSTEM.

The strength of the TNT APS-X H+ Retrofit Kit is the combination of its core components.

Instead of focusing on a single upgrade, TNT brings together the hop chamber, precision barrel, and bucking into one PTW-oriented package.

APS-X H+ // THE CONTROL POINT

The CNC-machined chamber provides the foundation for hop adjustment.

Hop-Up: TNT APS-X H+
Construction: CNC Machined
Adjustment: Precision Adjustable
Finish: Red Anodized

6.02MM // THE BARREL

The precision inner barrel completes the core assembly.

Length: 370mm
Inner Bore: 6.02mm
Type: Precision Airsoft Inner Barrel
Platform: Compatible Systema M4 PTW

TR-HOP // THE CONTACT SYSTEM

TNT’s included bucking works alongside the chamber and barrel.

Bucking: TNT TR-HOP
Included: Yes
Purpose: Compatible Hop-Up Interface

Together, these components create a unified retrofit package designed specifically around compatible PTW applications.

WHY UPGRADE?

CONTROL • CONSISTENCY • COMPLETE INTEGRATION

The APS-X H+ kit isn’t simply about installing a tighter barrel.

Its advantage comes from upgrading several interacting components together.

CNC-MACHINED HOP-UP

Provides a precisely manufactured platform for hop adjustment.

6.02MM PRECISION BORE

Designed around consistent BB travel when correctly installed and maintained.

370MM LENGTH

A dedicated option for compatible PTW configurations requiring this barrel length.

TR-HOP INCLUDED

No need to immediately source a separate compatible bucking.

MATCHED TNT COMPONENTS

The chamber, barrel, and bucking are supplied together as a retrofit system.

RED ANODIZED FINISH

Provides a distinctive premium appearance to the CNC hop-up assembly.

COMPATIBILITY // IMPORTANT INFORMATION

This product is an aftermarket internal upgrade intended for compatible Systema M4 PTW rifles.

Confirm both platform compatibility and the required 370mm barrel length before ordering.

Aftermarket PTW components can have model-specific requirements, and compatibility should not be assumed based only on external M4 styling.

Professional installation is recommended where appropriate.

TNT APS-X H+

A COMPLETE PRECISION PACKAGE FOR THE SYSTEMA PTW.

The TNT APS-X Hop-Up System H+ Barrel and TR-HOP Bucking Retrofit Kit for Systema M4 PTW Rifles – 370mm brings three important internal components together in one premium upgrade package.

A precision CNC-machined APS-X H+ hop-up chamber, 370mm 6.02mm inner barrel, TNT TR-HOP bucking, and red anodized finish create a coordinated system designed for PTW owners looking to refine their rifle’s hop and barrel assembly.

Rather than relying on one component alone, the TNT package focuses on the relationship between the hop chamber, bucking, and precision barrel, providing a solid foundation for a properly tuned Systema PTW.

For customers searching for a TNT APS-X Systema PTW hop-up, Systema M4 PTW 370mm barrel, 6.02mm PTW inner barrel, TNT TR-HOP bucking, Systema PTW hop-up upgrade, or TNT APS-X H+ Retrofit Kit, this package delivers a premium all-in-one solution for compatible PTW platforms.

TNT APS-X / H+ HOP-UP / SYSTEMA M4 PTW / 370MM / 6.02MM PRECISION BARREL / TR-HOP