Tokyo Marui KelTec KSG Gas Pump-Action Bullpup Shotgun

Tokyo Marui No.04 Kel-Tec KSG Gas Shotgun

Tokyo Marui KelTec KSG Gas Pump-Action Bullpup Shotgun

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€394.99

Quantity

Gas Non-Blowback
Pump Action Design
Removable Gas Tank

Featuring all of Tokyo Marui’s usual high-quality standards of construction and design, this is a gas powered non-blowback replica of Kel-Tec’s futuristic looking bullpup KSG shotgun, as seen in many videogames and movies.

Full description

Delivery & Returns

If you have items in your basket from our European Warehouse, the minimum order value is £25. This is to cover EU shipping costs. The minimum order value includes the value of any items from our UK Warehouse.

Delivery & Postage

Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.

For more information please check out our Delivery Information Page.

Estimates

Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.

UK Standard

£6.95

From

UK 24hr Dispatch

£8.95

From

Highlands / Islands

£24.99*

From

* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.

Returns

We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.

You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.

For more information on returning products, and how to do it please visit our Returns Policy Page.

Description

Once again Tokyo Marui demonstrate to their Airsoft community their prowess in design, with this incredible replica of Kel-Tec’s KSG shotgun, accurately managing to recreate the look and feel of this unique bullpup shotgun.

By utilising similar materials to those used on the real KSG, Marui have managed to make their Airsoft gun appear and feel almost like the real thing. Externally the Marui KSG is almost indistinguishable from the real thing, having accurately recreate the bullpup’s unique aesthetics. The receiver and body are constructed from tough and lightweight polymers, whilst the barrels, rails and internals have been machined from alloy, resulting in a well balanced and easy to handle Airsoft replica.

To ensure that their Airsoft KSG shotgun performs well, Marui have utilised the gas tank system as used by their popular Breacher range of gas shotguns. This well designed gas system is highly efficient, and allows users to adjust the number of BBs fired by the weapon with its 3 and 6 round modes.

As you would expect of an Airsoft replica of a modern firearm, the Marui KSG features a 20mm RIS accessory rails. The upper 12” rail runs the full length of the KSG’s barrel, allowing users to mount any optics or scopes as required, such as compact red dot sights. The pump also as a 6” long rail, offering ample space for mounting forgrips for enhanced control over the Airsoft gun or flashlights.

Built in the bullpup configuration, the KSG is a short and compact weapon ideal for CQB, but manages to maintain a long length barrel. Just like the real KSG, Tokyo Marui’s replica possesses two magazine barrel tubes. The left tube is used to store up to two spare shells, whilst the right barrel is used for loading the shell to fire it.

Featuring all of the high-quality design and manufacturing we’ve come to expect of a Tokyo Marui product, this gas powered Airsoft replica KSG shotgun is perfect for Airsofters seeking a compact CQB friendly shotgun, or simply those of you wanting to add a unique and futuristic looking replica to your Airsoft collection.

Features:

High quality Tokyo Marui design and construction
Gas powered non-blowback design
Extremely gas efficient system
Bullpup configuration style design
Ultra-modern external aesthetics
Realistic racking sound
Three shot / Six shot adjustable system
Ambidextrous trigger lock safety
12'' alloy upper 20mm rail for attaching sights and red dots
6'' lower rail on the pump for attaching vertical grips
Ambidextrous front sling loop points
Mock non-functional back barrel selector
Rubberised textured butt plate
Rear loaded with Airsoft shotgun shells
Left barrel can be used to hold up to 2 spare shells
Removable gas tank
Gas tank is stored in the butt of the weapon, behind the rubber butt plate
Included flip up ironsights
Flip up ironsights adjustable for windage and elevation
Textured pump and grip for enhanced grip and control
Branded:
- 'COCOA FL USA'
- 'KSG'
- 'MADE IN JAPAN ASGK

Package Includes:

No.04 Kel-Tec KSG Gas Shotgun
Flip-Up Ironsights
Gas Tank
Shell
User Manual

Special Instructions:

Please note you cannot slam fire this weapon like you could with the TM Breacher, you must complete a full firing cycle before you can pump the weapon again.

Specification

General

Weapon Type	Shotgun
Over 18	Yes
Defence / UKARA Required	Yes, No,
FPS, using 0.20g BB	Approx.310fps ± 10%, using 0.20g BB
Site Legal, using 0.20g BB	Yes
Pre-Built	Yes
Included Items	Shell Ironsight Set Removable Gas Tank
User Skill Level	Advanced Player
Warnings	Lubrication is required

Weight and Dimension

Length (Collapsed)	55.1cm

Construction

Primary Colour	Black
Pre Two-Toned	No
Construction	Alloy Barrels, Top Rail, Sling Mount and Internals, with Polymer Body, Flip-Up Ironsights and Pump
External Construction	Polymer Alloy
Internal Construction	Polymer Alloy

Weapon Specific

Powered By	Green Gas
Blowback	None
Weapon Platform	Kel-Tec KSG
Magazine Style	Shell
Fire Selector	None
Safety Features	Trigger Lock
Shooter Configuration	Ambidextrous
Weapon Configuration	Bullpup
Weapon Scale	1:1
Suggested BB Weight	0.25g

Hop-Up

Hop-Up Unit	Yes
Hop-Up Adjuster	Fixed

Furniture

Furniture	Railed Handguard Railed Receiver Ambidextrous Safety Fixed Stock Flip-Up Ironsights
Rail System	20mm RIS / RAS
Stock Setting	Fixed
Stock Positions	1 Position
Sight Type	Aperture Iron Sight
Sling Options	Stock, Handguard, Loop,

Magazine Specific

Magazine Type	Shotgun Shell, Low Capacity,
Magazine BB Capacity	Approx. 30 Rounds
Magazine BB Fill Method	Speed Loader
Magazine BB Fill Location	Top

Shotgun Specific

Shotgun Load Style	Shell
Barrel Configuration	Tri-Barrel

Product Testing Data

Test Description	Tested using 0.2g BBs and ULTAIR @ 9.1°c
Test Date	07/04/2025

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

This table should be used for reference, and cannot be used to check one weight against another, as the weight of the BB affects the power.

In order to check if the BB can be used with your replica chronograph using the weight you wish to use and then compare it against the table.

Every time you change weights you will need to re-chrono and check against the table. This is not a conversion chart between weights.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity	BB Weight (Grams)
FPS	0.20	0.25	0.28	0.30	0.32	0.36	0.40	0.43	0.45	0.50
250	0.58	0.73	0.81	0.87	0.93	1.05	1.16	1.25	1.31	1.45
260	0.63	0.79	0.88	0.94	1.00	1.13	1.26	1.35	1.41	1.57
270	0.68	0.85	0.95	1.02	1.08	1.22	1.35	1.46	1.52	1.69
280	0.73	0.91	1.02	1.09	1.17	1.31	1.46	1.57	1.64	1.82
290	0.78	0.98	1.09	1.17	1.25	1.41	1.56	1.68	1.76	1.95
300	0.84	1.05	1.17	1.25	1.34	1.51	1.67	1.80	1.88	2.09
310	0.89	1.12	1.25	1.34	1.43	1.61	1.79	1.92	2.01	2.23
320	0.95	1.19	1.33	1.43	1.52	1.71	1.90	2.05	2.14	2.38
325	0.98	1.23	1.37	1.47	1.57	1.77	1.96	2.11	2.21	2.45
328	1.00	1.25	1.40	1.50	1.60	1.80	2.00	2.15	2.25	2.50
330	1.01	1.26	1.42	1.52	1.62	1.82	2.02	2.18	2.28	2.53
335	1.04	1.30	1.46	1.56	1.67	1.88	2.09	2.24	2.35	2.61
340	1.07	1.34	1.50	1.61	1.72	1.93	2.15	2.31	2.42	2.68
345	1.11	1.38	1.55	1.66	1.77	1.99	2.21	2.38	2.49	2.76
350	1.14	1.42	1.59	1.71	1.82	2.05	2.28	2.45	2.56	2.85
355	1.17	1.46	1.64	1.76	1.87	2.11	2.34	2.52	2.63	2.93
360	1.20	1.51	1.69	1.81	1.93	2.17	2.41	2.59	2.71	3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity	BB Weight (Grams)
FPS	0.20	0.25	0.28	0.30	0.32	0.36	0.40	0.43	0.45	0.50
250	0.58	0.73	0.81	0.87	0.93	1.05	1.16	1.25	1.31	1.45
260	0.63	0.79	0.88	0.94	1.00	1.13	1.26	1.35	1.41	1.57
270	0.68	0.85	0.95	1.02	1.08	1.22	1.35	1.46	1.52	1.69
280	0.73	0.91	1.02	1.09	1.17	1.31	1.46	1.57	1.64	1.82
290	0.78	0.98	1.09	1.17	1.25	1.41	1.56	1.68	1.76	1.95
300	0.84	1.05	1.17	1.25	1.34	1.51	1.67	1.80	1.88	2.09
310	0.89	1.12	1.25	1.34	1.43	1.61	1.79	1.92	2.01	2.23
320	0.95	1.19	1.33	1.43	1.52	1.71	1.90	2.05	2.14	2.38
330	1.01	1.26	1.42	1.52	1.62	1.82	2.02	2.18	2.28	2.53
340	1.07	1.34	1.50	1.61	1.72	1.93	2.15	2.31	2.42	2.68
350	1.14	1.42	1.59	1.71	1.82	2.05	2.28	2.45	2.56	2.85
360	1.20	1.51	1.69	1.81	1.93	2.17	2.41	2.59	2.71	3.01
370	1.27	1.59	1.78	1.91	2.03	2.29	2.54	2.73	2.86	3.18
380	1.34	1.68	1.88	2.01	2.15	2.41	2.68	2.88	3.02	3.35
390	1.41	1.77	1.98	2.12	2.26	2.54	2.83	3.04	3.18	3.53
400	1.49	1.86	2.08	2.23	2.38	2.68	2.97	3.20	3.34	3.72
410	1.56	1.95	2.19	2.34	2.50	2.81	3.12	3.36	3.51	3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity	BB Weight (Grams)
FPS	0.20	0.25	0.28	0.30	0.32	0.36	0.40	0.43	0.45	0.50
250	0.58	0.73	0.81	0.87	0.93	1.05	1.16	1.25	1.31	1.45
260	0.63	0.79	0.88	0.94	1.00	1.13	1.26	1.35	1.41	1.57
270	0.68	0.85	0.95	1.02	1.08	1.22	1.35	1.46	1.52	1.69
280	0.73	0.91	1.02	1.09	1.17	1.31	1.46	1.57	1.64	1.82
290	0.78	0.98	1.09	1.17	1.25	1.41	1.56	1.68	1.76	1.95
300	0.84	1.05	1.17	1.25	1.34	1.51	1.67	1.80	1.88	2.09
310	0.89	1.12	1.25	1.34	1.43	1.61	1.79	1.92	2.01	2.23
320	0.95	1.19	1.33	1.43	1.52	1.71	1.90	2.05	2.14	2.38
330	1.01	1.26	1.42	1.52	1.62	1.82	2.02	2.18	2.28	2.53
340	1.07	1.34	1.50	1.61	1.72	1.93	2.15	2.31	2.42	2.68
350	1.14	1.42	1.59	1.71	1.82	2.05	2.28	2.45	2.56	2.85
360	1.20	1.51	1.69	1.81	1.93	2.17	2.41	2.59	2.71	3.01
370	1.27	1.59	1.78	1.91	2.03	2.29	2.54	2.73	2.86	3.18
380	1.34	1.68	1.88	2.01	2.15	2.41	2.68	2.88	3.02	3.35
390	1.41	1.77	1.98	2.12	2.26	2.54	2.83	3.04	3.18	3.53
400	1.49	1.86	2.08	2.23	2.38	2.68	2.97	3.20	3.34	3.72
410	1.56	1.95	2.19	2.34	2.50	2.81	3.12	3.36	3.51	3.90
420	1.64	2.05	2.29	2.46	2.62	2.95	3.28	3.52	3.69	4.10
430	1.72	2.15	2.40	2.58	2.75	3.09	3.44	3.69	3.86	4.29
440	1.80	2.25	2.52	2.70	2.88	3.24	3.60	3.87	4.05	4.50
450	1.88	2.35	2.63	2.82	3.01	3.39	3.76	4.04	4.23	4.70
460	1.97	2.46	2.75	2.95	3.15	3.54	3.93	4.23	4.42	4.91
470	2.05	2.57	2.87	3.08	3.28	3.69	4.10	4.41	4.62	5.13
480	2.14	2.68	3.00	3.21	3.42	3.85	4.28	4.60	4.82	5.35
490	2.23	2.79	3.12	3.35	3.57	4.02	4.46	4.80	5.02	5.58
500	2.32	2.90	3.25	3.48	3.72	4.18	4.65	4.99	5.23	5.81
510	2.42	3.02	3.38	3.62	3.87	4.35	4.83	5.20	5.44	6.04

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