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1.99
  • 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.

3.99
  • 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.

3.99
  • 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.

4.99
  • 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. 

7.49
  • For RAVEN EU18
  • OEM Replacement
  • Fix Hammer Issues

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

7.49
  • Silicone construction
  • Various "hardnesses" available
  • Wide "flat HOP" contact patch

The Maple Leaf Autobot HOP-up rubber has gained a reputation as one of the best upgrade components if you want to extend the range and improve the accuracy of a TM based GBB pistol, VSR/bar-10 sniper rifle, or GBBR with TM GBB HOP-up bucking compatibility. The Autobot has a wide and flat contact patch to help stabilise your BB in flight and extend your range. This bucking is also designed to ensure your BB is chambered consistently with every shot, guaranteeing impressive accuracy when compared to standard HOP-up buckings. This is the latest variant of the Autobot and is constructed from silicone instead of standard rubber, offering greater resistance to temperature changes.

7.49
  • Wide contact patch
  • For TM VSR and GBB
  • Silicone construction - cold resistance built-in!

Maple Leaf has quickly risen to become the market leader in HOP-up rubbers and inner barrels, and the Maple Leaf Decepticon bucking is no exception. The design of the Decepticon bucking features a narrower entrance to help the BB feed in a consistent spot with each cycle, and a contact patch with a refined shape intended to provide more consistent lift across the entire upper surface of the BB for greater accuracy than standard HOP buckings. This particular bucking is made from silicone, offering greater resistance to temperature changes than rubber equivalents, making it especially useful for a gas blowback rifle or accurized GBB pistol.

7.49
  • Replacement magazine fill valve
  • For GBB magazines
  • Includes an O-ring

If you have a magazine which leaks from the fill valve, or your mag is a bit old and the valve has taken a hammering over the years, a replacement valve is the way to go. This Specna Arms valve replaces the fill valve in your magazine with a nice fresh one, complete with an O-ring to ensure there are no leaks! This valve will require a valve key to install.

8.49
  • 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!

8.49
  • 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.

9.49
  • 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.

9.49
  • 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.

9.49
  • 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.

9.49
  • 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.

10.49
  • 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.

10.99
  • 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.

10.99
  • 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.

10.99
  • 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.

11.99
  • 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.

11.99
  • 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.

13.49
  • 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!

13.49
  • 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!

14.49
  • 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. 

14.49
  • Silent Fill Conversion
  • For Tokyo Marui Pistol
  • Enough For 8 Magazines

Created for Tokyo Marui type pistol Gas Airsoft magazines, and 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!

14.49
  • Brass construction
  • Replacement knocker valve
  • For Tokyo Marui EU17 GBB

The MEC M-Valve from PTS is designed to improve gas efficiency and speed up the cyclic rate of your Tokyo Marui EU17 GBB pistol. The valve is constructed from high strength brass with rubber O-rings and should help improve the performance of your pistol in cold weather, and speed up the cyclic rate if you have installed a heavy steel slide.

14.49
  • Brass construction
  • Replacement knocker valve
  • For KSC/KWA GBB pistols and SMGs

The MEC M-Valve from PTS is designed to improve gas efficiency and speed up the cyclic rate of your KWA/KSC GBB pistol or SMG. The valve is constructed from high strength brass with rubber O-rings and should help improve the performance of your pistol in cold weather, and speed up the cyclic rate if you have installed a heavy steel slide or bolt.

14.49
  • Brass construction
  • Replacement knocker valve
  • For Tokyo Marui MWS GBBR and Hi-capa GBB pistols

The MEC M-Valve from PTS is designed to improve gas efficiency and speed up the cyclic rate of your Tokyo Marui Hi-capa GBB pistol or MWS GBBR. The valve is constructed from high strength brass with rubber O-rings and should help improve the performance of your pistol in cold weather, and speed up the cyclic rate if you have installed a heavy steel slide or bolt.

15.49
  • Aluminium
  • For Army/Marui
  • Improved Compression

An enhanced HOP Unit for Army Armament / Tokyo Marui branded M1911 platform Gas Blowback Replicas, which serves to improve compression and lift achieved from your BBs. It is constructed from Aluminium and comes supplied with the Chamber, HOP Army, Adjustment Wheel, Two Screws and a small O-Ring.

16.99
  • For AAP-01
  • Ideal Spare
  • Fix Gas Mags

A replacement or spare Outlet / Knocker Valve for the Action Army AAP-01 Assassin 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.

17.99
  • Stainless steel construction
  • Includes enhanced recoil spring and buffers
  • For Tokyo Marui EU17/18c/22/34 GBB Pistols

If you are seeking upgrades for your TM based EU series GBB pistol and are after an increase in cyclic speed, but you also want the added rigidity to keep your pistol performing in the long run, CowCow has put together a handy set including an enhanced recoil spring, stainless steel guide rod and a set of their competition recoil buffer spacers! This set should improve the cyclic rate of your EU series handgun, and can add some serious speed with the buffer spacers installed if you know what you're doing!

About Our All Gas Blowback Parts

Stock up on vital accessories and upgrade your weapon ahead of a skirmish with our range of gas blowback parts. From feed lips to HOP Rubbers, O-Rings, hammers, complete spares kits and many more, you’ll find it all at Patrol Base.

Ideal for a range of airsoft gun designs, our airsoft gas gun parts are compatible with green gas pistols and CO2 pistols alike, as well as our gas shotguns and beyond. 

Don’t stop there; explore our entire collection of airsoft upgrades and create your dream personalised airsoft replica, from electric internal parts to  inner barrel accessories and AEG springs.

Our airsoft experts are also on hand to provide support with your technical modifications, simply get in touch with our team today.