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£2.99
  • For AK HOPs
  • Polymer Made
  • Ideal Spare Part

A tough Polymer C-Clip for AK style HOP units.

£3.99
  • Double Rib
  • ~60 Degree
  • Good Air Seal

A series of HOP Buckings from Modify, one for all models of AEGs and another for the Modify Hybrid Inner Barrels.

£5.99
  • Includes Bucking
  • For Marui Style AEG
  • For M130-150 Spring

A replacement hop up rubber and bucking designed for m130-150 springs, but can also be used for low FPS builds with heavyweight BB. 

£5.99
  • Includes Bucking
  • For Cold Weather
  • For Marui Style AEG

Will fit almost all Airsoft AEG on the market. The rubber is made from Silicon and features a 50 Degree Nub, applying a moderate amount of hop to BBs. 

£6.00
  • For Hadron M-TDC
  • Cure Bad Trajectory
  • Greater Spin Control

This is a nub-plate for the latest generation of Hadron Designs' M-TDC Hop Cover. It has two adjustment points instead of one, offering the user greater control over BB spin.

£6.49
  • Wide Flat Patch
  • WE, KWJ GBB & VSR
  • Varying Degrees Of Hardness

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. 

£6.49
  • Wide Flat Patch
  • WE, KWJ GBB & VSR
  • Various Degrees Of Hardness

Compared to the Autobot, this hop up rubber is far stronger and has a flatter shaped contact patch inside. 

£6.99
  • 5 Clips Per Pack
  • Fits Mix Of Hop Units
  • Can Be Shaped With Knife

ASG Ultimate barrel locking clips are sold at 5 per pack. Ideal replacement for any loose or fragile barrel clips. 

£6.99
  • For GBB & VSR
  • Range of Hardness
  • Tapered & Concave Patch

A high quality silicone hop rubber designed to replace the current hop rubber in your Airsoft Gun.

£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.

£7.99
  • Great Spare Part
  • Hop and Nub Set
  • Soft Rubber Design

A replacement hop-up rubber and bucking for Airsoft AEG Hop-Up units. 

£7.99
  • No Modification
  • For R-Hopped Guns
  • Even Bucking Contact

R-Hopping is the latest popular HOP modification for Airsoft Guns, which involves using a Flat Contact Patch on the bucking to impart perfectly even backspin on your BBs, even if imperfections are present in the BB. This style of HOP Modification usually requires a modified HOP Arm, which can lead to imperfections if the modification is not carried out perfectly. This HOP Arm is ready to drop in to any R-Hopped system and apply perfect and even pressure on the contact patch, allowing you to make the most of your upgrades. Not only this, but it will work with standard HOP Units, stopping you having to spend money on aftermarket units.

£7.99
  • No Modification
  • For R-Hopped Guns
  • Even Bucking Contact

R-Hopping is the latest popular HOP modification for Airsoft Guns, which involves using a Flat Contact Patch on the bucking to impart perfectly even backspin on your BBs, even if imperfections are present in the BB. This style of HOP Modification usually requires a modified HOP Arm, which can lead to imperfections if the modification is not carried out perfectly. This HOP Arm is ready to drop in to any R-Hopped system and apply perfect and even pressure on the contact patch, allowing you to make the most of your upgrades. Not only this, but it will work with standard HOP Units, stopping you having to spend money on aftermarket units.

£7.99
  • No Modification
  • For R-Hopped Guns
  • Even Bucking Contact

R-Hopping is the latest popular HOP modification for Airsoft Guns, which involves using a Flat Contact Patch on the bucking to impart perfectly even backspin on your BBs, even if imperfections are present in the BB. This style of HOP Modification usually requires a modified HOP Arm, which can lead to imperfections if the modification is not carried out perfectly. This HOP Arm is ready to drop in to any R-Hopped system and apply perfect and even pressure on the contact patch, allowing you to make the most of your upgrades. Not only this, but it will work with standard HOP Units, stopping you having to spend money on aftermarket units.

£10.99
  • VSR/GBB Pistol
  • High Quality Rubber
  • ~65 Degree Hardness

A VSR style HOP Rubber offering roughly 60 degrees of hardness, which is compatible with a range of replicas.

£12.99
  • 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.

£13.99
  • For Maxx HOP Unit
  • For R-HOP Buckings
  • Improve Consistency

The TDC (Top Dead Centre) Trolley is designed for Maxx HOP Up Chambers, and allows you to use the included M-Nub contact patch, which is ideal for using with R-Hop modifications for a massive improvement in accuracy and consistency per shot. This is because of the evenly distributed force applied onto the bucking/rubber that will result in more stable and uniform spin whilst your BB is in the air.

£14.99
  • Increases Accuracy
  • Works with Heavier BB's
  • Compatible with Master Mod Barrels


Master Mods are a new Internal Parts manufacturer bringing a whole new meaning to the term reliable. The Master Mods R-Hop Contact rubber is a hardened contact for use with heavier weight BB's, increasing accuracy & performance.

£15.99
  • Sub 370fps Builds
  • 2 Rubbers & Nubs
  • 60 Degree Blue Rubber

We have stocked this particular AEG hop rubber set for years. One of our most popular, reliable and promising items you can install into your own Airsoft hop unit. 

£17.25
  • 20mm Rail
  • HOP Modification
  • Twin Screw Adjustment

An updated design of the Top Dead Centre HOP Modification for MK23 NBB Pistols, from Hadron Designs. This awesome bit of kit provides fine Twin Screw control over your HOP adjustment for precision tuning, as well as a top 20mm rail to install sights.

£18.99
  • Wide Flat Patch
  • For KSC Style Barrels
  • 75 Degrees Of Hardness

A great way to modify your KSC Airsoft gun. 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.

£18.99
  • Military Grade Polymer
  • Upgrade Hop Unit
  • Highly Durable

A military grade polymer replacement for the stock Toyko Marui Airsoft MWS Gas Blowback Rifle hop-up unit designed and built by Angry Gun. This high quality part is an upgrade from the stock one and is perfect for those who are further wanting to upgrade the performance of their replica, or for those who have broken their existing part and are looking to upgrade.

£21.50
  • Easy Build & Installation
  • CNC Machined Aluminium
  • Improved Accuracy & Range

An excellent upgrade or replacement over standard AEG AK hop units. CNC machined to an incredibly high standard you will not be disappointed. 

£22.99
  • Easy Build & Installation
  • CNC Machined Aluminium
  • Improved Accuracy & Range

An excellent upgrade or replacement over standard AEG AR36 hop units. CNC machined to an incredibly high standard you will not be disappointed. 

£24.99
  • Perfect Upgrade
  • Alloy Hop-Up Unit
  • No Loose Movement

A replacement Hop-Up Unit for Airsoft AK Rifles, designed and constructed to high standards by Action Sports Games in Denmark as part of their Ultimate Upgrade Parts Range. 

£24.99
  • Perfect Upgrade
  • Alloy Hop-Up Unit
  • No Loose Movement

A replacement Hop-Up Unit for Airsoft M4 / AR-15 / M16 Rifles, designed and constructed to high standards by Action Sports Games in Denmark as part of their Ultimate Upgrade Parts Range. 

£24.99
  • Perfect Upgrade
  • No Loose Movement
  • Alloy Hop-Up Unit

A replacement Hop-Up unit for ASG Brand AUG, and is part of Action Sports Games Ultimate Upgrade Parts range. The Hop-Up unit is an Alloy hop up chamber and Hop-Up adjuster.

£24.99
  • Holds position securely
  • CNC Machined Parts
  • For High End Builds


A CNC Machined replacement for the stock Toyko Marui Airsoft MWS Gas Blowback Rifle hop-up adjuster designed and built by Angry Gun. This high quality part is an upgrade from the stock one, allowing for finer adjustment and holds its position better. This part is perfect for those who are further wanting to upgrade the performance of their replica, or for those who have broken their existing part and are looking to upgrade.

£26.99
  • 2 x HOP Arms
  • Alloy Construction
  • Accurate Adjustments

A series of very precise and Alloy constructed HOP chambers for either M4 or AK platform replicas. Both are supplied with two types of HOP Arms.

£27.50
  • 3D Printed
  • 0.4g+ Required
  • Lightweight & Tough

A 3D Printed Outer Barrel Assembly for TM & WE branded EU17/EU18 model GBB Pistols, which offers a TDC Grub Screw HOP style adjustment to increase performance when paired with a quality bucking and heavyweight BBs.

About Our Airsoft Hop Up Units & Buckings

Looking to upgrade your airsoft gun to attain maximum range? Well, you’ve come to the right place. Our airsoft hop ups transform your replica’s backspin to give you the trajectory you’ve been dreaming of. 

Take out your enemies from afar with incredible accuracy from our maple leaf hop ups and buckings, and explore options for all-weather conditions. Whether you’re looking to modify your piece now, or simply after a spare hop up for when your current one runs out, enjoy improved airseal, varied hardness levels and even bucking contact when you shop with Patrol Base. 

We stock options for all types of weapons too, including airsoft M4 hop up units, as well as offering some of the best names in the field from G&G to ASG. 

What are you waiting for? Shop online today for next day delivery, or visit our store to check out our hop ups in person.