This Action Army precision inner barrel is engineered to provide a more uniform BB travel than many standard barrels. The 6.03 mm bore combined with a 290 mm length helps reduce lateral dispersion and improve shot-to-shot consistency, particularly when paired with a quality hop-up and internal components.

Intended for maintenance and tuning on AEG/ASG replicas that accept this size, the barrel is a straightforward upgrade for users seeking measurable accuracy gains without major mechanical changes. Installation requires access to the replica’s internal mechanism; if you lack technical experience, have a qualified technician perform the fitment to avoid damage or malfunction.

Concluding sentence: a practical, effective upgrade to enhance ballistic performance while maintaining compatibility with standard quality components.

Technical features & specifications

Brand: Action Army

Inner diameter: 6.03 mm

Length: 290 mm

Material: steel precision-machined for tight tolerances

Application: replacement/upgrade for AEG/ASG replicas compatible with this bore/length

Finish/precision: calibrated machining for reduced tolerances and consistent BB exit

Package contents

1 × Action Army precision inner barrel 6.03 mm — 290 mm

Warnings & maintenance (GPSR compliant)
Do not modify or tamper with the barrel; unauthorized machining may compromise safety and function. Store the barrel in a dry place away from heat, humidity and direct sunlight. Keep out of reach of children.
Installation: requires partial or full disassembly of internal mechanisms; consult a qualified technician if you lack the required skills. During installation, verify alignment with the hop-up unit and other internals.
Maintenance: clean the barrel with appropriate tools before and after use to remove BB residue; avoid harsh solvents that could affect tolerances; periodically inspect hop-up condition and related seals.
These warnings are provided in accordance with the General Product Safety Regulation (GPSR) and applicable Italian law.