NUPROL W-Mag B 370rnd High-Cap Magazine for M4/AR-15 AEGs

  • 370rnd Capacity
  • Windowed mag design
  • For Airsoft M4/AR15 AEG rifles

Featuring dot pattern on the side and rubberised buttplate, this is for those of you looking for a more modern M4 hi-cap magazine.

This magazine holds 370 BBs and is loaded through its fill window, located on the top of the magazine body and wound using the wheel at the bottom.

This magazine is constructed from strong polymer with a rubberised baseplate complete with an extension to allow for "mag padding" and a dot matrix so you can mark your magazines for I.D and admin purposes.

This magazine takes its name from the mock witness windows located on either side of the magazine, through which you can see the internal gear and BBs, letting you know how much blasting you have left.

Full description



  • 370rnd Capacity
  • Polymer construction
  • Mock witness windows on either side
  • Rubberised baseplate
  • Fits most Airsoft M4/AR15 AEG rifles

Package Includes

  • NUPROL 370rnd W-Mag B High-Cap Magazine for M4/AR15 AEG



Parts & Accessories Type
Colour Wheel Greyscale
Item Colour
Black, Tan ,
Construction Icon
Product Height
Approx. 19cm
Product Length
Approx. 7cm
Product Width
Approx. 3.5cm
Weight KG Icon
Weight (KG)
Approx. 0.167kg

Magazine Specific

Magazine Style Icon
Magazine Style
STANAG, Long Gun Magazine, Assault Rifle, M4 / AR Platform,
Weapon Platform
AR, M4 / AR-15 / M16, Assault Rifle, M4/AR-15 AEG,
Magazine Type
  • High Capacity
  • AEG
Magazine BB Capacity
Approx. 370 Rounds
Magazine BB Fill Location
Magazine BB Fill Method
Fill Window