KSC M11A1 Heavyweight Gas SMG (Japan Version)

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  • Faithful Replica of Classic Open Bolt Submachine Gun
  • Low FPS Japanese Version
  • Extremely High Rate of Fire
  • KSC System 7 Gas System
  • 280 fps from a 50-round Magazine at 20 Rounds Per Second
  • High-Quality Plastic Receiver for Lightweight Backup Carry
  • Threaded Barrel Allows for Proprietary Suppressors and Tracer Units
  • Compatible Only with KSC M11 System 7 Series Gas Magazines

An incredibly compact weapon, this is closer to a machine pistol than it is to a submachine gun. Around 1.3 kg / 3 lbs. and approximately 25 cm / 10 inches, this thing occupies as much space and mass as a large pistol but with that 21 cm (8 inches) 446g (1 lb.) magazine, it pulls its center of mass central and low making it handle very cleanly with the ability to naturally turn around its center point quickly.

The 23 cm / 9-inch extendible stock is a bit tight for bigger operators but for most, it functions as a better-then-nothing short stock. Although not strictly necessary, the frame stock offers solid support for keeping that full auto fire on target. The weapon fires from an open bolt just like the real thing which is a nice touch if not ideal for outdoor gaming for reasons of fouling.

This model features the System 7 gas system which is both reliable and consistent as well as features enough robustness to tolerate wear and tear over time very well. The weapon is also all-metal so unlike other polymer models this one not only feels more realistic but it generally feels and sits better in terms of mass and rigidity.

Speaking of fire, this M11 keeps the groups pretty tight; on full auto, things open up a bit with its 20 BBs per second rate of fire which can empty the entire 50-round magazine in less than 3 seconds. Consequently, controlled bursts of 2-3 rounds are entirely manageable with short trigger taps which helps keep your fire controllable but still a high threat against your targets. Despite its controllability, its high cyclical rate means that even short bursts sound like small chainsaws exploding which does a good job of spooking the enemy.

Note: This is the Japanese Version and has a lower FPS output of 280. Please note that this variant of the KSC M11 will only take HFC134a or duster gas as the use of green gas will increase the wear and tear of this gas SMG.

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Magazine Compatibility:

  • KSC M11 System 7 Series Gas Magazine


  • x1 KSC M11A1 Heavyweight Gas SMG (Japan Version)
  • x1 50 Round Gas Magazine

Originating ArmoryINGRAM
Replica TypeSMG
ModelMAC 10 & M11
Capacity (rds)50
Power (fps)280
Power SourceHFC134A
Shooting ModeSemi Auto / Full Auto
Net Weight (kg)1.5
Length (mm)255.0
Barrel Thread TypeCW
Content Included

KSC M11A1 Heavyweight Gas SMG (Japan Version)

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