Umarex H&K UMP Sportsline SMG Airsoft AEG

  • Fully Licensed Replica
  • Ambidextrous Design
  • Folding Locking Stock

Officially licensed by UMAREX from H&K themselves this Airsoft UMP Replica is a highly detailed and realistic replica of its real world namesake. Used by Armed Forces around the world the UMP was designed in the early 1990s by Heckler & Koch in Germany, and was designed to fire .45 calibre pistol rounds from a weapon small in size and compact enough to use in CQB firefights. The Airsoft version of this sub-machine gun is a tribute to its name sake, with plenty of features which make the gun great for a wide range of Airsoft players.

Chances are, if you've been to an Airsoft site you've either seen players use these, or seen them used as rental guns due to their performance and reliability.

Full description


This Airsoft UMP replica is constructed with a Polymer Receiver, Stock, and Magazine with Alloy Rails, and Internals. Just like the real gun, the body of the gun is plastic, which allows the gun to be lightweight and manoeuvrable despise its size. The rails of the gun are constructed from alloy to ensure that they rail is still intact no matter how many times you attach or remove sights, grips and other attachments.

The handguard of the replica features three 20mm RIS / RAS rails, the most common type of rail in Airsoft, on the left, right and bottom. These rails allow the attachment of a wide variety of aftermarket grips, bi pods, torches, lasers and even launchers to be fitted to the gun, allowing you to customise the replica to make it truly your own. The top of the H&K UMP features an additional 20mm RIS / RAS rail allowing you to attach a scope or sight to your gun, and is slightly raised to allow the sight to be seen over the integrated ironsights.

If you're worried about space for transport, or want to make the gun more usable in even the tightest CQB space then the stock can be folded, and locks into place when both open and closed. The stock is folded to reveal the battery compartment at the rear of the gun, and has plenty of space for up to 9.6v Ni-Mh Stick Batteries, or 7.4v LiPo stick battery.

This Airsoft gun is powered by electric, meaning that internally the gearbox and motor system are powered by batteries, allowing the gun to fire in not only safe, but fully automatic too, making the gun a blast to play with. There is no need to cock the weapon every time you want to take a shot, simply change the fire mode and hold down the trigger. If you're worried about running out of BBs too fast then you don't need to, as the gun comes with a high capacity 400 round magazine which is wheel wound from the bottom allowing you to shoot for ages without having to stop and change mag.

The gun features an adjustable hop-up unit which is designed to add backspin to the Airsoft BB to allow it to travel more stably and with more accuracy. The hop-up unit is adjustable for pressure, and is designed to cause the BB to spin as it travels through the unit. This backspin takes advantage of the magnusson effect which creates an Air pocket for a more stable trajectory. The hop-up is fully adjustable allowing a wide range of BB weights to be used, with option for fine tuning the replica for optimum performance and range.

Internally the gun features a V3 gearbox, a very common gearbox, meaning that there are plenty of aftermarket and third party parts available for the gun should the worst happen and you need to repair it, or should you wish to upgrade for even better performance. The gearbox is rear wired, with the batteries stored on top, and is wired to mini-tamiya for ease of attaching batteries. The gearbox also features a quick change spring system, and once the gearbox is removed from the gun, allows you to change the spring without having to take apart the gearbox. This allows you to easily adjust the spring should you need to without having to worry about correctly putting the gearbox back together.

This Airsoft replica of the H&K UMP 45 is the perfect purchase for any Airsoft Skirmisher looking for a highly realistic and ultra detailed Airsoft gun, for those skirmishers who are looking for the absolutely perfect starter gun, or for those looking for a reliable backup gun to add to their collection.


  • Fully Licensed Airsoft Replica
  • Electric Powered Airsoft AEG
  • Realistic branding
  • Fully H&K Branded
  • Safe, Semi, and Fully Automatic Firing Modes
  • Folding Stock which locks in place securely
  • Ambidextrous magazine release
  • Ambidextrous fire select
  • Front, mid, and rear sling loop mount points
  • 400rnd High Capacity wheel wound magazine
  • Compatible with a wide variety of internal and external aftermarket parts
  • Front lower 20mm RIS / RAS rail for fore grips, bipods and launchers
  • Top 20mm RIS / RAS rail for attaching sights and scopes
  • Two side 20mm RIS / RAS rails for torches, lasers, and other attachments
  • Integrated adjustable iron sights
  • Fixed position mock charging handle
  • Mock bolt release
  • Textured Grip to prevent slippage
  • Rotary hop-up adjustable when mock bolt cover pulled to the rear
  • Micro-switch trigger system
  • Mini-tamiya battery connector
  • Quick change spring system, once gearbox removed
  • Designed for stick type batteries
  • Perfect for use with 7.4v LiPo and 9.6v Ni-Mh Batteries
  • Full metal gears
  • Metal Barrel
  • Branded:
    • 'cal.6mm BB'
    • 'HK UMP'
    • 'Heckler&Koch GmbH'
    • 'Licensed Trademark of Heckler & Koch GmbH'
    • '.45 Auto'

Package Includes

  • H&K UMP Sportsline SMG Airsoft AEG
  • 400rnd High-Capacity Magazine
  • Instruction Manual

Special Instruction

Please ensure that you do not instinctively attempt to pull back the mock charging handle as it is fixed in place. Attempting to pull the charging handle can lead to damage, and possibly even snapping off the charging handle itself.

To access the hop-up unit you need to pull back the mock bolt plate by hand.

Please ensure that when collapsing the stock that the battery compartment window is closed. This is especially important to check after you have inserted or replaced the battery.



Weapon Construction External
Weapon Type
Submachine Gun
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 320fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Screwdriver Icon
Included Items
  • Instruction Manual
  • 400rnd H&K .45 High Capacity Wheel Wound Magazine
Skill Level Icon
User Skill Level

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 1.8kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Colour Wheel Greyscale
Secondary Colour
Two Tone Icon
Pre Two-Toned
Construction Icon
Polymer Reciever, Stock, and Magazine with Alloy Rails, and Internals
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
Magazine Style Icon
Magazine Style
G36 Series
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Adjustable behind mock bolt plate when pulled to the rear.


Weapon Furniture Icon
  • Railed Handguard
  • Folding Stock
  • Railed Receiver
  • Ambidextrous Magazine Release
  • Ambidextrous Fire Selector
  • Ambidextrous Safety
  • Short 20mm Rail
Rail System Icon
Rail System
20mm RIS / RAS
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
2 Position
Sight Type Icon
Sight Type
Open Iron Sight, Aperture Iron Sight,
Sling Plate Icon
Sling Options
Stock , Handguard , Loop , Receiver ,

Magazine Specific

Magazine Type
High Capacity, Wheel Wound, AEG,
Magazine BB Capacity
Approx. 400 Rounds
Magazine BB Fill Method
Fill Window
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V3 Gearbox
Wiring Icon
Gearbox Wiring
Top Wired
Spring Change Icon
Gearbox Quick Change Spring
Digital Trigger Icon
Gearbox Electronic Trigger
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Tested using 0.20g BB

Related videos - Play Real - Game On! - Safety First - Safety and warning instructions

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