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  • For Bersa Series
  • Great Spare Part Kit
  • For Pistol & Magazine
£2.99
Was £5.99
Save £3.00
  • For 4.5mm / 6mm
  • For Repairing Pistol
  • Great Spare Part Kit
£3.99
Was £5.99
Save £2.00
  • For GHK G5
  • Very Important Part
  • Stopping Point For Nozzle
£1.99
  • Great Spare Part Kit
  • For ASG Duty Series
  • For Pistol & Magazine
£3.99
  • 70 Degree Hardness
  • For 2012 LM4 GBBR Designs
  • Purpose Designed KSC / KWA
£5.99
  • Silicone Rubber
  • For System 7 Pistols
  • KWA & KWC Compatible
£5.99
  • For Hadron M-TDC
  • Cure Bad Trajectory
  • Greater Spin Control
£6.00
  • For RAVEN EU18
  • OEM Replacement
  • Fix Hammer Issues
£6.00
  • For ASG Tac-6
  • For 4.5mm / 6mm
  • Great Spare Part Kit
£6.99
  • 75 Degree Toughness
  • Monster / Diamond Design
  • For KSC Gas Blowback Guns
£6.99
  • For 90m/s to 120m/s
  • For Long Range Shots
  • 50-80 Degree Rubbers
£6.99
  • Wide Flat Patch
  • For KSC GBB Style Barrels
  • Variable Degrees Of Hardness
£6.99
  • Wide Flat Patch
  • For KSC GBB Style Barrels
  • Variable Degrees Of Hardness
£6.99
  • Ideal Spare Part
  • Fix Gas Leak Issues
  • For TM870 / Breacher
£6.99
£11.99
£12.00
  • Semi-Automatic Version
  • For WE Europe EU17 & EU34
  • Complete Hammer Assembly
£15.99
  • For MK23 NBB
  • Install Twin Adaptor
  • Change Contact Point
£16.00
  • CNC Machined
  • Improved RIF Reliability
  • Increased Gas Efficiency
£17.99
  • Easy to Install
  • OEM Replacement
  • Good Spare to Own
£19.99
  • Increase power (140%)
  • For KWA LM4/PTS MKM
  • Polycarbonate Construction


    £24.99
    • Quick Fitting
    • Aluminium Design
    • For TIPPMANN M4


    £29.99
    • Easy to Install
    • OEM Replacement
    • Useful Part to Own
    £2.99
    • High Quality O-Rings
    • Convert To Silent Fill
    • For WE Pistol Magazine
    £2.99
    • Self Centralised
    • Concave Pattern
    • Fits under the Hop-Up Arm


      £3.49
      • Easy to Fit and Install
      • Fits under the Hop-Up Arm
      • Concave Pattern
      £3.49
      • CO2 Pistol Use
      • Light Lube Required
      • Spares Replacement Kit
      £3.99
      • For 90m/s to 120m/s
      • For Long Range Shots
      • 50-80 Degree Rubbers
      £6.99
      • For 90m/s to 120m/s
      • For Long Range Shots
      • 50-80 Degree Rubbers
      £6.99
      • For 0.4g BBs +
      • Silicon Construction
      • For VSR-10 / KJW / WE 


      £8.95

      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