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The OB1 5.1 Outer barrel is precision CNC machined out of stainless steel for greatly improved durability. The finish comes from the titanium nitride coating which is often used with real steel competition firearms for its excellent scratch and abrasion resistance. Its fixed barrel design enhanced the stability during cycling.

It is compatible with For WE-Tech, Tokyo Marui and other compatible Hi-CAPA 5.1 Series Airsoft GBB Pistols

Highlighted features
Stainless Steel material with CNC machined
Compatible with M11 threaded adapter
2 markings (ie .45; .40) engraved
For Hi-Capa 5.1
Available in Raw Silver, Titanium Black and Titanium Gold

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts.

Highlighted features
Fixed barrel designPrecision CNC machined stainless steel construction
Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look
.40 & .45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter


Full CNC machined with Stainless Steel material. .45 & .40 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look. It is designed for Hi-Capa 5.1 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Fixed barrel design
Precision CNC machined stainless steel construction
Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look.40 & .45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter

Full CNC machined with Stainless Steel material. .45 & .40 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look. It is designed for Hi-Capa 5.1 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Fixed barrel design
Precision CNC machined stainless steel construction
Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look.40 & .45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter

Full CNC machined with Stainless Steel material. .45 & .40 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look. It is designed for Hi-Capa 5.1 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Fixed barrel design
Precision CNC machined stainless steel construction
Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look.40 & .45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter

Full CNC machined with Stainless Steel material. .45 & .40 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look. It is designed for Hi-Capa 5.1 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Fixed barrel design
Precision CNC machined stainless steel construction
Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look .40 & .45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter

Full CNC machined with Stainless Steel material. .45 & .40 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). Spiral fluted to reduce the weight of the barrel as well as give it an aggressive look. It is designed for Hi-Capa 5.1 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Fixed barrel design
Precision CNC machined stainless steel construction
.45 marking stamped into the barrel
The inter threaded design is compatible with M11 threaded adapter


Full CNC machined with Stainless Steel material. .45 marking engraved on the side of Barrel. The inter threaded design is compatible with M11 threaded adapter (Also our A01 Silencer Adapter). It is designed for Hi-Capa 4.3 and there are 3 colours option: Polished Silver, Titanium Black and Titanium Gold.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising.

Highlighted features
Precision CNC machined 6061 aluminum construction
Compensator can be removed and installed in seconds.
No set screws = no worries about your compensator loosening.
The inter threaded design is compatible with M11 threaded adapter
Available in silver, black and gold.
For TM G17 & G18cAluminum

Fast Lock Compensator & Barrel Set with threadless solution. In many cases a threaded on compensator becomes loose or the set screw(s) become loose. This then causes a problem, it either loses timing, or you have to re tighten set crews. Another issue is the use of a thread protector when not running the compensator. In most cases people take them off or run a O-ring and keep checking the protector after a couple of rounds to check tightness. Or it gets lost while shooting. Aluminum Fast Lock Compensator & Barrel Set does not require any thread protector simply remove the compensator and you are done.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising. Strong Screw glue is needed for installation. Use a drop of screw glue when installing the screw and wait for it to dry out overnight. Damage could be caused to the screw thread if screw glue was not used.

Highlighted features
Precision CNC machined 6061 aluminum construction
Compensator can be removed and installed in seconds.
No set screws = no worries about your compensator loosening.
The inter threaded design is compatible with M11 threaded adapter
Available in silver, black and gold.

For TM G17 & G18cAluminum Fast Lock Compensator & Barrel Set with threadless solution. In many cases a threaded on compensator becomes loose or the set screw(s) become loose. This then causes a problem, it either loses timing, or you have to re tighten set crews. Another issue is the use of a thread protector when not running the compensator. In most cases people take them off or run a O-ring and keep checking the protector after a couple of rounds to check tightness. Or it gets lost while shooting. Aluminum Fast Lock Compensator & Barrel Set does not require any thread protector simply remove the compensator and you are done.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising. Strong Screw glue is needed for installation. Use a drop of screw glue when installing the screw and wait for it to dry out overnight. Damage could be caused to the screw thread if screw glue was not used.

Highlighted features
Precision CNC machined 6061 aluminum construction
Compensator can be removed and installed in seconds.
No set screws = no worries about your compensator loosening.
The inter threaded design is compatible with M11 threaded adapter
Available in silver, black and gold.For TM G17 & G18c

Aluminum Fast Lock Compensator & Barrel Set with threadless solution. In many cases a threaded on compensator becomes loose or the set screw(s) become loose. This then causes a problem, it either loses timing, or you have to re tighten set crews. Another issue is the use of a thread protector when not running the compensator. In most cases people take them off or run a O-ring and keep checking the protector after a couple of rounds to check tightness. Or it gets lost while shooting. Aluminum Fast Lock Compensator & Barrel Set does not require any thread protector simply remove the compensator and you are done.

*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts. The actual performance is based on the overall setting on your airsoft gun. Please consult your airsoft gunsmith for advising. Strong Screw glue is needed for installation. Use a drop of screw glue when installing the screw and wait for it to dry out overnight. Damage could be caused to the screw thread if screw glue was not used.