King Arms PDW SBR SD Assault Rifle

King Arms
  • Suppressor Inc.
  • Electronic Trigger
  • Accepts MP5 Mags

King Arms have a new offering for the PDW crowd, the SBR SD, which is a modern 9mm compact with a railed handguard, ergonomic controls and included suppressor.

Full description


This Airsoft Electric Gun replica from King Arms is a lightweight and compact PDW which accepts MP5 magazines, and offers plenty of modern, ergonomic furniture which will turn heads, and keep you as effective as possible in the field. The Alloy-made suppressor in the images is included and goes a long way to complete its' tactical aesthetic. Underneath this suppressor is a 14mm CCW thread, so you could easily install your own Suppressors/Tracer Units as you please.

The handguard is an M-LOK design which is made from Alloy for a tough and solid finish which doesn't wobble under stress. It comes with side and lower 20mm rails installed and ready for your accessories, and offer plenty of space to improve the SBR's prowess. The top 20mm rail runs the full length of the RIF to the rear of the receiver, and comes with a set of flip-up ironsights already installed, which have a wide aperture and offer quick target acquisition. These can be folded out of the way when not in use, and used as a backup if your main sight fails.

The receiver is made from a tough yet lightweight Polymer, and is an adaptation of the hugely successful AR receiver, but shrunk down the 9mm platform. This means that it accepts widely-available MP5 magazines from many brands, but namely ASG/CYMA. The controls on the receiver are user friendly and will be familiar to any who has used an AR platform RIF before. The magazine release is borrowed from the MP5 design and is ambidextrous, with a further standard release on the off-side, for those who prefer the AR-style release. Underneath the half size dust cover you will find a gear style HOP adjust, which will improve effective range with the correct settings and a 0.25g+ BB.

The mag well is quite wide which means that there is a small amount of play when magazines are installed; this allows for many brands of magazines to be used, and also means that magazines sit really well, making for lightning fast reloads.

The pistol grip is a unique and ergonomic design which is comfortable to hold, has ridges and texturing to improve grip, and also features removable backstraps. There are several sizes of backstraps included in the box, and they are easy to replace in a heartbeat by squeezing the tag and sliding them downwards off the grip. This helps you achieve the perfect grip size to make it comfortable for any user.

The stock is a skeleton-style sliding design which can be adjusted to a total of seven positions, to make it the perfect length for any user or situation. This is also where the battery is stored, and offers enough room for most sizes of batteries. During testing a 7.4v 2000mAh Crane Stock LiPo was used, and fit with plenty of space. The electronic trigger responded really well to the LiPo battery and offers a rapid response and easy trigger pull. The stock is very tough for a Polymer design, feels great to the tough and has no wobble when under stress. There is a loop on the underside of the stock for the installation of slings, but will probably require a keyring loop installing to make it easier to use.

If you're looking for a compact yet tough-feeling PDW size Airsoft Electric Gun which looks different from the norm, but doesn't require a tonne of expensive proprietary parts/mags to operate, then the King Arms PDW SBR SD may be just the thing for you.

Product Features

  • Included suppressor
  • Alloy M-LOK handguard
  • 20mm rail pieces installed
  • Flip-up ironsights
  • Full-length top 20mm rail
  • 14mm CCW thread
  • 100rnd mid cap magazine
  • AR style 9mm receiver
  • Gear style HOP adjust
  • Tough Polymers
  • Rear wired Version 2
  • Skeleton sliding stock
  • Rear sling loop
  • Adjustable size pistol grip
  • Backstraps included
  • Ambidextrous MP5 mag release
  • Typical AR style mag release
  • Perfect CQB RIF
  • Accepts many brands of mag
  • Takes MP5 magazines
  • Electronic trigger
  • Rapid trigger response
  • Mini Tamiya connector

Package Includes

  • PDW SBR SD Assault Rifle
  • 100rnd Mid Cap Magazine
  • Backstraps

Special Instructions

To remove the sliding stock you must press down the button on the leg, this will allow you to remove the stock. Do not try to pull the stock off without pressing this button or you will cause damage to the body.



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. 346fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Magazine
  • Back Straps
Skill Level Icon
User Skill Level
Regular Player, Experienced Player,

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.1kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Construction Icon
Alloy suppressor, barrel assembly, handguard, stock guides and trim. Polymer receiver, pistol grip, and stock.
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
AR 9mm
Magazine Style Icon
Magazine Style
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
Right Handed
Weapon Configuration Icon
Weapon Configuration
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 dust cover


Weapon Furniture Icon
  • Railed Handguard
  • Suppressor
  • Flip-Up Ironsights
  • Ambidextrous Magazine Release
  • Sliding Stock
  • Backstraps
Rail System Icon
Rail System
MLOK Rail System, 20mm Pistol Mount ,
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
7 Position
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options
Stock , Loop ,


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 100 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
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
Notepad Icon
Tested Using
ASG Blaster 0.20g BBs
Notepad Icon
Test Date

Detailed Power Tests

FPS, using 0.20g BB
Approx. 346fps, using 0.20g BB

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