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This 6.03mm tight bore barrel from Action Army is a great way to increase the accuracy and FPS of your AAP01. The barrel measures 200mm in length,...

A precision 6.03mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard coating process, the barrel pro...

A precision 6.03mm inner barrel from ASG, with a length of 465mm. Suitable for the ASG Steyr SSG 69 and M40A3. Features a 6.03mm inner diameter a...

A precision 6.03mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard coating process, the barrel pro...

InnerThis is a very high quality tight bore barrel made from stainless steel.  Although expensive you know you will be getting a long lasting barr...

A precision 6.03mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard coating process, the barrel pro...

A precision 6.03mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard coating process, the barrel pro...

A precision 6.03mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard coating process, the barrel pro...

This is a very high quality tight bore barrel made from stainless steel. Although expensive you know you will be getting a long lasting barrel mad...

A precision 6.03mm inner barrel from LayLax that is designed specifically for the Marui MWS platform.  This barrel has an extremely high construct...

This is a very high quality tight bore barrel made from stainless steel. Although expensive you know you will be getting a long lasting barrel mad...

Inner bore width of 6.03mm with a ±0.01mm tolerance. Solid BB stability and accuracy, made with enhanced stainless steel (SUS). Inner barrel bore ...

This is a very high quality tight bore barrel made from stainless steel. Although expensive you know you will be getting a long lasting barrel mad...

A precision 6.03mm inner barrel from LayLax that is designed specifically for the Tokyo Marui MWS gas blowback rifles. Constructed from high-stren...

This is a very high quality tight bore barrel made from stainless steel. Although expensive you know you will be getting a long lasting barrel mad...

Introducing the Prometheus “EG Barrel W”; Wide-Expanded HOP window model, based on the EG barrel with the renewed Wide-Expanded HOP window for a ...

A comprehensive, perfectly matched barrel/hop-up set from Angry Gun for the Marui MWS series. Includes: 250mm carbon steel inner barrel with 6.03...

Inner bore width of 6.03mm with a ±0.01mm tolerance. MP5A4, A5, SD5, SD6, Spetsnaz. Solid BB stability and accuracy, made with enhanced stainless ...

A precision 6.03mm inner barrel from LayLax that is designed specifically for the Tokyo Marui AKM and AKX gas blowback rifles. Constructed from hi...

Introducing the Prometheus “EG Barrel W”; Wide-Expanded HOP window model, based on the EG barrel with the renewed Wide-Expanded HOP window for a ...

Introducing the Prometheus “EG Barrel W”; Wide-Expanded HOP window model, based on the EG barrel with the renewed Wide-Expanded HOP window for a ...

A comprehensive, perfectly matched barrel/hop-up set from Angry Gun for the Marui MWS series. Includes: 250mm carbon steel inner barrel with 6.03...

This is a very high quality tight bore barrel made from stainless steel. Although expensive you know you will be getting a long lasting barrel mad...

Inner bore width of 6.03mm with a ±0.01mm tolerance. G36C・P90・CAR15・SIG552. Solid BB stability and accuracy, made with enhanced stainless steel (...