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£1.50
  • Enhanced rotor spring
  • For Umarex/VFC pattern Glock GBB series
  • Spring steel construction

The CowCow Technologies Enhanced Rotor Spring replaces your original rotor spring with a high strength part with a hard coating to prevent corrosion from developing over time. This spring is only compatible with the Umarex/VFC pattern Glock GBB series and should help extend the lifespan of your Airsoft pistol.

£2.99
  • Replacement O-rings for B01 Blowback housing
  • Keep your enhanced Hi-capa/1911 running for longer!
  • 3x O-rings of various sized included

The Supplemental O-ring set from CowCow is designed to work with their B01 blowback housing. The O-rings are constructed from oil-resistant rubber, ensuring they will not swell when exposed to lubricants used in Airsoft GBB pistols. Included in the set are 3 O-rings measuring 9.5x2mm, 9x1.9mm, and 9x2mm.

£2.99
  • Replacement valve knocker springs
  • Set of 2
  • For TM Hi-capa and clones

If you are getting inconsistent performance from your Hi-capa, it is likely that your valve knocker spring has been worn out. Fear not, Airsoft Masterpiece has provided a replacement spring set which will keep your Hi-capa running smoothly in the long term! The set includes two springs, either of which can be installed into a TM Hi-capa or clone.

£2.99
  • Spring steel construction
  • Enhanced nozzle spring
  • For Tokyo Marui Hi-capa Airsoft GBB pistol

If you are after an improvement in FPS and recoil force from your Airsoft Hi-capa GBB pistol, an uprated nozzle spring is a great way to get there! The NP1 from CowCow provides 180% of the strength of the original nozzle spring installed into the TM Hi-capa series and is also compatible with the Tokyo Marui 1911, M45A1, V10 and MEU GBB pistols.

£2.99
  • Spring steel construction
  • Enhanced nozzle spring
  • For Action Army AAP-01 GBB pistol

If you are after an improvement in FPS and recoil force from your Airsoft AAP-01 GBB pistol, an uprated nozzle spring is a great way to get there! The 200% Nozzle Spring from CowCow provides double the strength of the original nozzle spring installed into the AAP-01 and should improve FPS and provide a snappier cyclic rate with a slight increase in recoil.

£2.99
  • 140% Hammer spring
  • Improves recoil and slide speed
  • For Tokyo Marui EU series GBB Pistol

Looking for more recoil from your EU series GBB pistol? Installing a stronger hammer spring should do the trick! This 140% Hammer Spring from CowCow replaces the original hammer spring in your Tokyo Marui based EU series pistol and provides additional force for each hammer strike, releasing more gas and providing higher FPS and improved recoil and slide speed! This part is constructed from high strength spring steel and is hard-coated to prevent corrosion.

£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
  • 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.

£4.99
  • Spring steel construction
  • Enhanced recoil spring
  • For Action Army AAP-01 GBB pistol

If you are after an improvement in recoil force and cyclic rate from your Airsoft AAP-01 GBB pistol, an uprated recoil spring is a great way to get there! The 150% Recoil Spring from CowCow provides an increase in strength over the original recoil spring installed into the AAP-01 and should improve the rate of fire and provide a snappier bolt speed with a slight increase in recoil.

£4.99
  • Enhanced piston head
  • Improves gas efficiency
  • For Action Army AAP-01 Assassin GBB pistol

Building out your AAP-01 for use as a primary pistol? The CowCow Enhanced Piston Head can help improve the gas efficiency and add long term durability to the impressive AAP-01 platform. This part is constructed from oil-resistant rubber, meaning it will not absorb lubricant and expand, preventing cycling issues from developing over long term use. This part is an essential for anyone going for the absolute maximum performance possible from their AAP-01.

£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
  • 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
  • Buffer spacer/Short stroke kit
  • Reduce wear on your slide
  • Shorten slide travel for more speed!

If you are tuning up your Hi-capa GBB, whether it's for an upcoming competition or the next CQB skirmish, a recoil buffer kit could be just what you need to give your setup a bit more speed! The Shock Buffer from Airsoft Masterpiece provides 4 rubber buffer pads and 4 steel spacers, allowing you to adjust the length of travel of your slide from short enough that it only just loads a BB, to full length with a single buffer pad to reduce wear. For faster semi-auto follow up shots, this is what you need!

£6.99
  • CNC aluminium construction
  • Available in gold, silver and black
  • For TM Hi-capa 4.3 and clones

If you are looking to add some unique flair to your Hi-capa 4.3, Airsoft Masterpiece is here to assist! Introducing the Recoil spring guide plug for TM Hi-capa 4.3 GBB, a precisely machined aluminium part with a low friction finish and a gorgeous external look. Available in black, gold or silver, this part would suit almost any build in style, and will slightly increase the cyclic rate of your pistol due to its smooth low friction finish.

£6.99
  • Recoil rod buffer selection
  • For EU series GBB with 6mm custom guide rod
  • Oil resistant rubber construction

The M6 Buffer Module from CowCow is designed to shorten the travel of the slide of your pistol, increasing its cyclic rate. The set includes 8 recoil buffer pads of varying hardness which can be stacked in various combinations to fine tune your pistol for optimum speed. This set is designed for Tokyo Marui based EU series pistols which have the CowCow Stainless Steel 6mm Diameter Custom guide rod installed.

£6.99
  • CNC 6061 Aluminium construction
  • Heat gradation finish
  • Short stroke your AAP-01 for more speed

Is your AAP-01 not fast enough? The CowCow Aluminium Buffer for AAP-01 is designed to satisfy even the most ravenous appetite for speed! This set includes two recoil rod spacers which are CNC machined from 6061 aluminium to provide a great balance between strength, precision and low weight. Adding one or two of the spacers to your guide rod will reduce the length of travel of the AAP-01 bolt and speed up the already impressive cyclic rate of the AAP-01 in both semi-auto and fully automatic fire.

£7.99
  • Replacement original part
  • For WE M4 GBBR magazine
  • Fix up your old mags!

If you have some old WE M4 GBBR magazines this may be the part you need to freshen them up! This part is an original WE part, and replaces the knocker valve on the WE M4 GBBR magazine. The valve body is constructed from brass, with steel internal parts and rubber O rings.

£7.99
  • Replacement part
  • Brass with rubber O-rings and a steel knocker
  • Fix up your old MK.23 magazines!

A replacement or spare Outlet / Knocker Valve for the Tokyo Marui MK23 SOCOM NBB Pistol. If you own plenty of Magazines and want to keep them in tip-top condition, then you're going to want a few Knocker Valves spare in your arsenal. They are incredibly easy to install, provided you have an appropriate Valve Key on standby. You can use other tools to install them, but this is not recommended as you could damage the Valve.

£7.99
  • PTS MEC Enhanced internal series
  • 2x Enhanced HOP rubbers/buckings
  • Two contact surfaces for improved consistency

The MEC HOP rubber/bucking is precision moulded and has a slightly narrower inner diameter at the entrance and extra coverage for the top of the barrel cut area for a vastly improved air seal. This HOP rubber provides two points of contact with the bb with equal pressure on either side, improving effective range and consistency.

£7.99
  • Stainless steel construction
  • Titanium coated
  • For Tokyo Marui Hi-capa and 1911 GBB pistols

If you are building out your dream Airsoft Hi-capa GBB pistol, the CowCow Stainless Steel hammer strut would be a great addition if you require an improved trigger feel and better mechanical engagement. This part is constructed from stainless steel with a titanium coating to prevent corrosion and warping. When installed into your TM based Hi-capa or 1911 GBB this part should help improve shot to shot consistency and provide longevity far beyond the original parts.

£8.49
  • 60° HOP-up rubber
  • Widened contact area
  • For TM GBB pistol, VSR-10 and clones

If you are looking for more consistency, accuracy and range from your setup you can trust Maple Leaf to provide you with the best solution! The Super Hop Rubber is a refined design based on the TM Pistol and VSR-10 HOP pattern, but with a widened contact area to provide a greater HOP-up effect, spread more evenly across the upper surface of the BB to provide a more consistent and straight trajectory.

£8.95
  • For 0.4g BBs +
  • Silicon Construction
  • For VSR-10 / KJW / WE

A high quality replacement Hop up rubber, made to 70 degrees of hardness, and designed for VSRs, as well as KJW and WE Airsoft designs.

£8.99
  • Spring steel construction
  • Includes hammer spacers
  • For TM Hi-capa and 1911 Airsoft GBB pistols

If you're a competitive shooter looking for a way to fine tune your hammer and trigger feel, the CowCow hammer power regulator will do the trick! This set includes 2 different hammer springs and a set of 8 spacers to allow you to set your Airsoft GBB Hi-capa or 1911 up for the perfect trigger feel and weight.

£8.99
  • Polymer construction
  • Enhanced nozzle for improved air seal
  • For Action Army AAP-01 Assassin GBB pistol

If you want your AAP-01 GBB to be running at its absolute best an enhanced nozzle would be a great choice to get the most out of this impressive platform. The CowCow Enhanced Plastic Nozzle is designed to improve the air seal performance and gas efficiency of the AAP-01, the result of which should be an increase in rate of fire and cyclic speed, with less wasted gas per shot. The set includes an enhanced loading nozzle for the AAP-01 GBB and the nozzle valve lock pin.

£9.99
  • Replacement Feed lips for TM or ASG MK.23
  • Finally a source for these!
  • Cheaper than buying a new magazine

If you have ever dropped your MK.23 mag on its feed lips I'm sure these will be of use to you. Replacement standard feed lips made from Polymer for TM or ASG MK.23 NBB pistols.

£9.99
  • CNC machined aluminium construction
  • For TM Hi-capa 4.3 GBB and clones
  • Reduces friction and wear - looks great too!

If you are building a Hi-capa to suit your own style and needs, consider this to add some unique looks to your popular pistol! Introducing the Aluminium Guide Rod for TM Hi-capa 4.3 GBB from Airsoft Masterpiece, a CNC machined aluminium guide rod available in several different colours to suit any build! These guide rods are finished perfectly, with a smooth friction-reducing anodised finish applied to ensure the beautiful colours stand the test of time and that your recoil spring does not hang up causing a reduction in cyclic rate.

£10.99
  • CNC Machined 6061 Aluminium construction
  • Heat gradation finish
  • For Tokyo Marui Hi-capa GBB pistol and clones

Building your dream SpeedQB Hi-capa? Or maybe it's an Airsoft IPSC Hi-capa build? Either way, you're going to love the T1 Aluminium Trigger from CowCow! This trigger is precisely machined from 6061 aluminium using CNC processes and is finished in the eye-catching and unique "heat gradation" finish. This trigger is also skeletonised, adding to its bespoke looks and reducing the weight for an improved trigger feel and better handling. Whilst already impressive, the T1 trigger also sports adjustable overtravel, allowing you to tune your trigger to suit your requirements and reduce the amount of excess movement available at the end of the trigger travel, saving time and increasing the speed of follow up shots!

£10.99
  • CNC Machined 6061 Aluminium construction
  • Heat gradation finish
  • For Tokyo Marui Hi-capa GBB pistol and clones

Building your dream SpeedQB Hi-capa? Or maybe it's an Airsoft IPSC Hi-capa build? Either way, you're going to love the T2 Aluminium Trigger from CowCow! This trigger is precisely machined from 6061 aluminium using CNC processes and is finished in the eye-catching and unique "heat gradation" finish. This trigger is also skeletonised, adding to its bespoke looks and reducing the weight for an improved trigger feel and better handling. Whilst already impressive, the T2 trigger also sports adjustable overtravel, allowing you to tune your trigger to suit your requirements and reduce the amount of excess movement available at the end of the trigger travel, saving time and increasing the speed of follow up shots!

£11.95
  • Requires Hadron TDC
  • Replaces MK.23 HOP arm
  • Improves HOP performance for heavy BBs

A replacement HOP arm for your MK23 pistol, either TM or ASG. This part will enhance your pistols range and enable it to apply HOP to BBs of 0.4g and higher!

£11.99
  • For AAP-01
  • Ideal Spare
  • Loading Nozzle

A Polymer constructed Gas/Loading Nozzle for the Action Army AAP-01 Assassin Gas Blowback Airsoft Pistol, which is an ideal spare part to own, and is absolutely vital to the function of the Pistol. If you plan on using Full Auto a lot, then a Spare Nozzle is a must-have, as you don't want to be caught out come skirmish day.

Do you own a Gas Blowback which is in need of spare parts or repairs? Maybe you want to stock up on those vital parts that you could need the day before an Airsoft Skirmish. From Feed Lips to HOP Rubbers, O-Rings, Hammers, Complete Spares Kits and many more, we've got it all here at Patrol Base.