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£20.99
Was £22.99
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  • Steel Construction
  • Ideal Replacement
  • For LCT AKM Models

A Steel constructed Gas Block for LCT branded AKM models, ideal as a replacement to a damaged part.

£39.99
  • Aluminium construction 
  • 14mm CCW male threaded tip
  • For SigAir MPX AEG

If you want your SigAir MPX even shorter than it comes from the factory this kit will do it! The Laylax Outer Barrel Base & Battery Block Set for SigAir MPX includes a super short outer barrel base and the Laylax Battery Block, allowing you to install a barrel extension or a suppressor which runs beneath the handguard for the integrally suppressed look. 

This part replaces your original outer barrel with an aluminium barrel base measuring 8.5cm overall length, with 4.5cm protruding ahead of the receiver when installed. Also included is the Laylax battery block, designed to keep your battery contained within the handguard when your barrel is pointed down. The battery block won't fit over a suppressor but if you decide to fit a barrel extension it should fit any with a diameter of less than 19mm. 

£24.99
  • Aluminium construction
  • 14.5" Heavy profile barrel - 14mm CCW male threads
  • Compatible with M4/AR15 AEG rifles

If you are building an M4 from the ground up or you want a new look for your M4/AR15 platform this 5KU Aluminium outer barrel is worth a look! This barrel is 14.5 inches in length, just like the standard carbine length M4 barrel but has a heavier profile towards the tip to simulate real-world heavy barrels which allow for more sustained fire before accuracy takes a dive due to heat build-up.

The barrel is constructed from two parts, the barrel itself and the barrel base which are secured together using a pair of steel grub screws. At the tip we have the Airsoft standard 14mm CCW male threading, leaving you with a wealth of options for what muzzle device you choose to mount. The profile of the barrel matches real M4 barrels throughout its length, making this a great choice as a replacement for those who don't like seeing what is clearly a skinny Airsoft barrel through the ports on their handguard. This barrel is designed for M4/AR15 AEGs and should fit the vast majority of them.

£27.99
Was £31.99
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  • Original Part
  • For LCT LCK47
  • Steel Construction

A replacement Gas Block for LCT branded LCK47 models, which is made to the original specification from Steel as a replacement part.

£14.99
  • Two Inch Extension
  • 14mm CCW Threaded
  • Tough Alloy Construction

A two inch barrel extension for 14mm CCW threaded barrels, providing that little extra length should you wish to add a suppressor or tracer to your favourite RIF but can't because of a rail system being in the way.

£8.99
  • 12mm CCW to 14mm CCW
  • For Female 12mm CCW
  • Install Suppressors/tracers

An alloy constructed thread adapter for Army Armament branded Airsoft pistols with a 12mm CCW female threaded outer barrel. If own an Army Armament pistol with a female thread on the outer barrel and want to install a suppressor, tracer unit or other muzzle device, then this is the adapter you require. It comes supplied with a knurled thread protector to prevent damage to the threads (and look awesome) when a muzzle device is not installed.

£16.99
  • 117mm Long
  • 5 Versions Available
  • Add Suppressors/Tracers

A 117mm barrel extension for any AEG with a 14mm CCW thread on the end of it. Perfect if you want to use a suppressor but can't because of a barrel that is recessed far inside the rail.

£16.99
  • 117mm Long
  • 5 Versions Available
  • Add Suppressors/Tracers

A 117mm barrel extension for any AEG with a 14mm CCW thread on the end of it. Perfect if you want to use a suppressor but can't because of a barrel that is recessed far inside the rail.

£16.99
  • 117mm Long
  • 5 Versions Available
  • Add Suppressors/Tracers

A 117mm barrel extension for any AEG with a 14mm CCW thread on the end of it. Perfect if you want to use a suppressor but can't because of a barrel that is recessed far inside the rail.

£16.99
  • 117mm Long
  • 5 Versions Available
  • Add Suppressors/Tracers

A 117mm barrel extension for any AEG with a 14mm CCW thread on the end of it. Perfect if you want to use a suppressor but can't because of a barrel that is recessed far inside the rail.

£19.99
  • Extension Piece
  • 14mm CCW Thread
  • Aluminium Construction

An Aluminium constructed outer barrel for M4/M15/M16 Airsoft Electric powered replicas which features a 14mm CCW thread and an extension piece to rapidly adapt between a CQB and Carbine length barrel.

£10.99
  • Converts to CW
  • Steel Construction
  • 18mm to 14mm Conveter

An adaptor which converts the 18mm thread on the Airsoft Scorpion Evo to a 14mm Counter Clockwise (CCW) Thread

£5.99
  • Anodised aluminium
  • Fits Well MB-01/04/05/08
  • 14mm CCW male thread

Take your sniper to the next level and reduce those all-important decibels with a silencer adaptor. This aluminium constructed thread adaptor allows you install muzzle devices such as suppressors and tracer units. Simply remove the barrel cap and replace it with this adaptor for a seamless transition to the muzzle device of your choice.

The adaptor provides a 14mm CCW thread to customise your replica, and is compatible with the MB01, MB05 and MB06 spring-powered Airsoft sniper rifles

£10.99
Was £18.99
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  • For 11mm CW pistol barrels
  • Thread adapter with thread protector
  • Stainless steel construction


The A01 Silencer Adapter is intended to be used on pistols with an 11mm clockwise female threaded outer barrel, such as WE pistols. When installed, the adapter provides the common 14mm CCW male thread, allowing the majority of muzzle devices to be added. The adapter is constructed from stainless steel, and is available in black, gold or silver finishes.

£10.99
Was £18.99
Save £8.00
  • For 11mm CW pistol barrels
  • Thread adapter with thread protector
  • Stainless steel construction


The A01 Silencer Adapter is intended to be used on pistols with an 11mm clockwise female threaded outer barrel, such as WE pistols. When installed, the adapter provides the common 14mm CCW male thread, allowing the majority of muzzle devices to be added. The adapter is constructed from stainless steel, and is available in black, gold or silver finishes.

£10.99
Was £18.99
Save £8.00
  • For 11mm CW pistol barrels
  • Thread adapter with thread protector
  • Stainless steel construction


The A01 Silencer Adapter is intended to be used on pistols with an 11mm clockwise female threaded outer barrel, such as WE pistols. When installed, the adapter provides the common 14mm CCW male thread, allowing the majority of muzzle devices to be added. The adapter is constructed from stainless steel, and is available in black, gold or silver finishes.

£5.99
  • Anodised aluminium
  • Fits Well MB-03
  • 14mm CCW male thread

Take your sniper to the next level and reduce those all-important decibels with a silencer adaptor. This aluminium constructed thread adaptor allows you to install muzzle devices such as suppressors and tracer units. Simply remove the barrel cap and replace it with this adaptor for a seamless transition to the muzzle device of your choice.

The adaptor provides a 14mm CCW thread to customise your replica, and is compatible with the MB-03 spring-powered Airsoft sniper rifles.

£34.99
  • 14mm CCW Threads
  • Anodised Black Finish
  • Adjustable Grub Screw Guidance

A replacement outer barrel for M4/15/16 variants that is constructed entirely from a strong and durable Alloy.

£8.99
  • Fits VORSK
  • For 12mm Thread
  • Attach Suppressors

This Thread Adapter is designed for VORSK Pistols that have an 12mm Female Thread (the Thread is recessed inside the Outer Barrel). Whether you have lost the original supplied with your Pistol, or you want to install a Supressor/Tracer Unit to your Pistol, this adapter is an absolute must for those who want a standard thread (14mm CCW Male) on their sidearm.

£8.99
  • Fits VORSK
  • For 12mm Thread
  • Attach Suppressors

This Thread Adapter is designed for VORSK Pistols that have an 12mm Female Thread (the Thread is recessed inside the Outer Barrel). Whether you have lost the original supplied with your Pistol, or you want to install a Supressor/Tracer Unit to your Pistol, this adapter is an absolute must for those who want a standard thread (14mm CCW Male) on their sidearm.

£13.99
  • 76.2mm Long
  • Easy To Attach 
  • Add Suppressors/Tracers

A 76.2mm long barrel extension for any AEG with a 14mm CCW thread on its outer barrel.

£18.99
  • 14mm CCW Thread
  • Removable Extension
  • Slots for A-Frame Post

A Two-Piece Outer Barrel Assembly for AR/M4/M16 Platform Airsoft Replicas, constructed to a tough standard using Aluminium. The Two Piece design allows you run the barrel in a short configuration, ending just after the A-Frame Sight Post, or in it's longest configuration with the extension piece installed. Both sections of the Outer Barrel feature a 14mm CCW Thread for the installation of Suppressors, Tracer Units and other Muzzle Devices.

£3.99
Was £4.99
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  • For 14mm Clockwise threaded barrel
  • Provides a 14mm CCW thread
  • Allows more common CCW accessories to be used

If you have ever felt like you messed up buying a rifle with a 14mm clockwise threaded barrel, weep no more! This 14mm CW to 14mm CCW thread adapter attaches to any 14mm CW male thread and provides a 14mm CCW male thread for the addition of more common CCW threaded accessories!

£12.99
  • CQB Style Barrel
  • 14mm CCW Thread
  • Aluminium Construction

An Aluminium constructed outer barrel for M4/M16 based Airsoft Electric replicas. It has a 14mm CCW thread at the end for the addition of muzzle devices and is a relatively easy part to install.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

£39.99
  • Build for super lightweight set-ups
  • Nylon and carbon fibre
  • Only around 30 grams!

The Monk outer barrels are build for super lightweight set-ups!

By using nylon and carbon fibre the outer barrels weighs in at only around 30 grams! It is the most lightweight outer barrel on the market today.

This outer barrel is compatible with the Monk GO Series, Monk OG Series and all other M4 series.

About Our Airsoft Outer Barrels & Barrel Extensions

Want to shorten or extend your replica? Here at Patrol Base we have a wide variety of airsoft outer barrels and barrel extensions in a variety of lengths, shapes and sizes for a range of different airsoft 6mm BB guns. Whether you’re looking for an airsoft barrel extension or outer barrel for your submachine gun, assault rifle or sniper rifle, you’ll find it here, as well as parts to fit them with ease.

Looking to suppress your airsoft pistol or rifle but don't have a threaded barrel? We have a range of silencer and suppressor adaptors that allow them to be attached easily to your airsoft gun. Once you’ve got that sorted, browse our selection of silencers and suppressors to attach to your brand new adaptor.

You can browse our entire airsoft outer barrel and barrel extension offering online or get a feel for them in person at our Huddersfield store.