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£1.99
  • For GHK G5
  • Very Important Part
  • Stopping Point For Nozzle

A very vital piece of a GHK G5 Gas Blowback Rifle, and is an ideal spare part to own in case the worst should happen come game day.

£2.99
  • Easy to Install
  • OEM Replacement
  • Useful Part to Own

Direct factory OEM replacement feed lips for WE Europe's G-Series range gas blowback pistols, that are constructed from polymer to the same spec as the original part.

£3.99
  • CO2 Pistol Use
  • Light Lube Required
  • Spares Replacement Kit

An ideal replacement for any low powered or leaking CO2 pistols and revolvers produced by ASG. 

£3.99
Was £5.99
Save £2.00
  • For 4.5mm / 6mm
  • For Repairing Pistol
  • Great Spare Part Kit

Spare parts kit designed for use with ASG's Raid 400, Thunder 9, and M9-A1 Series of pistols, for both the 4.5mm Airgun and 6mm Airsoft Variants. The set contains four Parts, Two Sizes of Valve Seal, a Valve Ring and Piercer Seal. 

£3.99
  • Great Spare Part Kit
  • For ASG Duty Series
  • For Pistol & Magazine

A parts kit containing replacement seals/O-Rings for the ASG CZ 75 P-07 and STI Duty gas blowback pistols.

£5.95
  • OEM Replacement
  • Standard Hop Unit
  • C-Clip & O-Ring Included

A standard replacement hop unit and chamber for the GHK G5 gas blowback rifle that includes everything except a rubber and nub.

£5.99
  • 70 Degree Hardness
  • For 2012 LM4 GBBR Designs
  • Purpose Designed KSC / KWA

A high quality replacement Hop Up rubber designed specifically for the Airsoft replica LM4 Gas Blowback Rifle. This particular rubber is intended for use specifically in those LM4 GBBRs manufactured to the 2012 design by KSC and KWA MAGPUL.

£5.99
  • Silicone Rubber
  • For System 7 Pistols
  • KWA & KWC Compatible

A replacement Hop Up Rubber designed specifically for use with KSC and KWA's System 7 line of Gas Blowback Airsoft Pistols. 

£6.00
  • For RAVEN EU18
  • OEM Replacement
  • Fix Hammer Issues

A replacement Hammer and Spring for the RAVEN EU18 automatic gas-powered pistol.

£6.99
  • For ASG Tac-6
  • For 4.5mm / 6mm
  • Great Spare Part Kit

Spare parts kit designed for use with ASG's TAC-6 Series of rifles, for both the 4.5mm Airgun and 6mm Airsoft Variants. The set contains Six Parts, the Valve Ring, the Valve Seal, Piercer Seal, Thin and Small O-Rings and a Spacer.

£6.99
  • 75 Degree Toughness
  • Monster / Diamond Design
  • For KSC Gas Blowback Guns

A replacement Hop Up Rubber designed specifically for use with KSC's line of Gas Blowback Airsoft guns. 

£6.99
  • For 90m/s to 120m/s
  • For Long Range Shots
  • 50-80 Degree Rubbers

A replacement Hop-Up rubber for the WE / NUPROL Range of Gas Blowback Airsoft Pistols specially designed with internal rubber ridges to add range over a standard hop-up rubber. 

£6.99
  • Wide Flat Patch
  • For KSC GBB Style Barrels
  • Variable Degrees Of Hardness

An absolute monster of an upgrade to make to your weapon. The external surface is ribbed to keep your inner barrel more stable inside your hop up unit with next to no play at all after you have fully re-assembled your Airsoft weapon.

£6.99
  • Wide Flat Patch
  • For KSC GBB Style Barrels
  • Variable Degrees Of Hardness

An absolute monster of an upgrade to make to your weapon. The external surface is ribbed to keep your inner barrel more stable inside your hop up unit with next to no play at all after you have fully re-assembled your Airsoft weapon.

£6.99
  • Ideal Spare Part
  • Fix Gas Leak Issues
  • For TM870 / Breacher

A high quality original replacement O-Ring for the TM870 and TM Breacher to help fix gas leak issues where the grip meets the body of the weapon.

£6.99
  • Silent Fill Conversion
  • Rejuvenate Your Mags
  • For ASG & KJW MK23 Magazines

Created for the ASG & KJW MK23 Airsoft gas pistol magazines, these kits allow you to replace damaged or worn-out O-rings, rejuvenating your magazines to a like-new condition, and keep them functional!

£8.99
  • Original Part
  • For WE Hi-Capa
  • Ideal Spare Part

A Polymer constructed Nozzle for the WE Hi-Capa series. 

£11.99
  • For WE Pistol Magazines
  • Enough For 8 Magazines
  • Compartment Storage Tray

A handy kit created for nearly all WE pistol gas Airsoft magazines. This kit is designed to allow you to replace your existing o-rings which are damaged or worn to bring them back to brand new condition, and give your magazine a new lease of life!

£11.99
  • CNC Machined
  • Reduces Gas Flow
  • Reduces Power by 10/20/30%

Power restrictor discs for Umarex & VFC models of MP7 GBB weapons. The velocity is reduced by 10%, 20% or 30% depending on which disc is installed.

£12.00
  • 2x Power Options
  • 6026 T9 Aluminium
  • CNC Machined Precision

Precision CNC machined from high quality T9 aluminium, this set of two power down valves allows users of certain gas powered KSC/KWA branded Airsoft guns to reduce their output FPS to a more game-safe level. 

£16.00
  • For MK23 NBB
  • Install Twin Adaptor
  • Change Contact Point

This latest offering from Hadron Designs updates the design of their MK23 HOP mod which not only allows you to externally adjust the HOP without diassembly, but will let you install a twin adaptor for greater BB control.

£17.99
  • CNC Machined
  • Improved RIF Reliability
  • Increased Gas Efficiency

A high quality Rocket Valve for KSC branded M4/G-Series/USPs manufactured by Angel Custom out of CNC Stainless Steel. The benefits of an uprated Rocket Valve are increased and more stable FPS thanks to more precise engineering and denser materials.

£19.99
  • Easy to Install
  • OEM Replacement
  • Good Spare to Own

A complete kit to resolve 99% of gas inefficiency and leaking problems throughout your pistol. 

£19.99
  • 92mm In Length
  • Increases Accuracy
  • 6.03mm Smooth Bore

An upgrade barrel for Tokyo Marui Glock 17 and Glock 18.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

£26.99
  • GBB Barrel
  • Stainless Steel
  • Rigid & Accurate

A Precision Inner Barrel for Gas Blowback Pistols and compact Airsoft weapons, produced to an incredibly high standard of tightbore performance increasing your range and accuracy over distance.

More Bang and less Hiss...

Upgrades and replacement parts for the inside of your Gas Blowback Airsoft Weapons. Here at Patrol Base Airsoft we stock a wide range of OEM Manufacturer Replacement Parts, as well as various Aftermarket Upgrade Parts designed to enhance the performance of your Airsoft Gun.

We stock a range of Parts and Upgrades for Gas Pistols, Rifles, and Submachine Guns allowing you to tweak your weapon to perfection. Our parts allow you to increase your Accuracy, improve the Recoil of your weapon, and make them more Gas Efficient.

We have Internal Parts available from all the best manafactuerers, such as Tokyo Marui, ASG Action Sport Games, WE Europe, Nuprol, King Amrs, LCT and more, following our golden rule, if we wouldn't use it, we won't sell it!

If you can't find something that you like, or want something which isn't on the website why not contact us via Phone and we can do our best to source it for you!
Telephone: 01484 644709