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40.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

40.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

46.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

46.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

46.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

46.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

46.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

52.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

52.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

58.99
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

64.49
  • Stainless Steel
  • 6.03mm Tight Bore
  • Increased Performance

An upgrade Airsoft 6mm BB Gun inner Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units.

26.99
  • Specially Designed
  • Specialised Airflow
  • Upgrade Inner Barrel

A new unique range of barrels by Maple Leaf designed to produce consistent air flow and pressure behind every BB as it leaves the barrel.

26.99
  • Specially Designed
  • Specialised Airflow
  • Upgrade Inner Barrel

A new unique range of barrels by Maple Leaf designed to produce consistent air flow and pressure behind every BB as it leaves the barrel.

52.99
  • Specially Designed
  • Specialised Airflow
  • Upgrade Inner Barrel

A new unique range of barrels by Maple Leaf designed to produce consistent air flow and pressure behind every BB as it leaves the barrel.

58.99
  • Specially Designed
  • Specialised Airflow
  • Upgrade Inner Barrel

A new unique range of barrels by Maple Leaf designed to produce consistent air flow and pressure behind every BB as it leaves the barrel.

35.49
  • 6.03mm x 363mm
  • Upgrade AEG Barrel
  • Increase Performance

An upgrade Airsoft 6mm BB Gun Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units. The barrel is constructed from Alloy, then Hard Coated via an Anodising Process.

46.99
  • Stainless steel construction
  • 6.03mm Tightbore inner barrel
  • For most Airsoft AEGs - Standard AEG barrel cut

If you want to squeeze a bit more accuracy and FPS out of your AEG, Laylax has just the thing. This 6.03mm Tightbore Inner barrel is part of the Laylax Prometheus range, widely regarded as the best source for AEG upgrade parts in the world. Inner barrels from this same range are known for their rigid stainless steel construction and immaculate internal finish and are what we use in the phenomenal Bolster Armouries AEGs.

This 6.03mm tightbore is designed for AEG rifles, SMGs, and support guns which use the Tokyo Marui AEG style of barrel cut, which is the vast majority on the market, and will provide an accuracy improvement thanks to its finely polished internal surfaces and a slight increase in FPS thanks to the tighter bore improving air seal and the overall efficiency of the system.

64.49
  • Stainless Steel
  • 6.03mm Tight Bore
  • Bridged Inner Barrel

Used by staff and many Airsofters a like to improve your range and accuracy. When combined with the right weight BB, hop-up rubber and patience this barrel delivers killer accuracy down range. 

22.49
  • 6.02mm Tightbore barrel
  • Stainless steel construction
  • For most Airsoft AEGs

If your AEG needs a bit of extra accuracy to get the job done, a tightbore inner barrel will do the trick! This Stainless Steel Tightbore Inner Barrel from ZCI has a 6.02mm bore, meaning a slight rise in FPS using the same mainspring and improvements in accuracy at long range. 

These barrels are designed to fit any Tokyo Marui spec AEG and are constructed from stainless steel for maximum rigidity and to retain straightness in the long term. Ideal for an AEG DMR build or any other AEG-based build which requires accuracy and more long range performance, the ZCI Tightbore will have your AEG shooting at its very best!

35.49
  • 6.03mm x 455mm
  • Upgrade AEG Barrel
  • Increase Performance

An upgrade Airsoft 6mm BB Gun Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units. The barrel is constructed from Alloy, then Hard Coated via an Anodising Process. 

35.49
  • Upgrade AEG Barrel
  • 6.03mm x 247mm
  • Increase Performance

An upgrade Airsoft 6mm BB Gun Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units. The barrel is constructed from Alloy, then Hard Coated via an Anodising Process.

46.99
  • 370mm length
  • 6.00mm diameter +/-10%
  • Stainless steel build

This is for you techies looking to get the maximum performance from your VSR or gas blowback Airsoft rifle. This Prometheus inner barrel is 370mm in length and 6.00mm in diameter, that's right - 6.00mm! Truly the tightest of bores!

Prometheus is a well known brand that has been in the Airsoft game for a long time and the quality has always stood at a consistently high level.

Constructed from stainless steel and, the small diameter reduces as much possible air loss and allows for maximum performance and a higher FPS to be reached, although check with your site's FPS limit before bringing your newly upgraded Airsoft rifle to skirmish. Due to the minimal diameter of this barrel, make sure to use high-quality BBs such as the G&G BB range, to avoid potential jamming of BBs.

35.49
  • 6.02mm diameter
  • 455mm length
  • Stainless steel construction

If you are looking to up the performance of you AEG and take it to the next level, Maple Leaf has got what you need. This 6.02mm Tightbore inner barrel is constructed from stainless steel and features a flawless internal finish for perfect shots every time. The 6.02mm is one of the tightest possible inner barrels that can be installed to get the most potential from your rifle, and increase your FPS and accuracy to stay ahead of the competition.

The barrel measures 455mm and can be any rifle with an AEG-compatible HOP up, for those of you wanting to improve your rifle's air seal and overall efficiency. With the barrel being so tight, make sure to keep it clean for maximum performance.

38.99
  • 6.03mm x 590mm
  • Upgrade AEG Barrel
  • Increase Performance

An upgrade Airsoft 6mm BB Gun Barrel which is compatible with Airsoft AEG Barrel Compatible Hop-Up units. The barrel is constructed from Alloy, then Hard Coated via an Anodising Process.

52.99
  • R-Hop Inner Barrel Set
  • Improves BB Accuracy
  • Works with AEG & GBB!

The Master Mod R-Hop Inner Barrel Set is a revolutionary design allowing you to install the set with ease in either your AEG or your GBBR! Yes that's right, it works in both. It's time to upgrade your airsoft gun with the high quality internals it deserves.

Upgrade inner barrels for airsoft M4 / AR15 rifles and more

Here at Patrol Base we have a wide variety of airsoft inner barrels available both in store and online. We stock barrels for both AEG airsoft guns, gas weapons and more, with common diameters such as 6.01mm, 6.03mm and 6.05mm. 

Looking to replace the inner barrel of another gun? Our range of airsoft inner barrels offer options for almost any assault rifle, pistol and sniper, such as M4, G36, MP5 and even VSR and L96 types.

Shop our AR15 and M4 length inner barrels online today or visit us in store.