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Home » Airsoft Accessories, Attachments & Parts » Airsoft Gun Magazines » Gas Gun Magazines » Hi-CAPA / 2011 Double Stack

KJW 25 Round Magazine for KJW KP-19 Hi-CAPA Gas Blowback Pistol
(Color: Black / CO2)

ID: 114944 (Mag-KJW-KP19-CO2)
KP-19.CO2-Mag.
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KJW

$32.00

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Color Options:
ColorBlack / CO2$32.00
ColorBlack / Green Gas$25.00

Description

Specs

Reviews

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Product Description

Features

  • Heavy duty zinc alloy construction
  • Large base for easy magazine reload manipulation
  • Heavy weight to mimic the weight of a real loaded magazine
  • High strength spring ensures reliable feeding

Manufacturer: KJ Works

'Modification of Green Gas and CO2 magazines to use aftermarket HPA fittings and valves will void all included warranties due to the potential risk of damage from exposure to High pressure and misuse.'

2 Customer Reviews

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by Eric Z. on 12/11/2025
"Followup to the previous review I made where I complained about low gas efficacy.

It appears that these mags don't tolerate the cold very well but are as every bit efficient as a TM mag and fill more efficiently. However once cold they lose a ton of power. If you cycle through multiple mags these are a decent bargain.
by Eric Z. on 11/22/2025
"Came with my KP-19.

Fills silently and maybe more efficiently than TM mags? Less efficient than TM mags in discharging, less bb capacity, much stiffer spring. Easier endcap removal. I can get through maybe 1.5 mags (so around 35-40 shots) per fill. On a TM mag, I can get through almost two full magazines (so 60 shots.)

Cheap speedloaders suffer against this mag as well, difficult or impossible to smoothly load no matter the angle. Have to place tension on the BB spring to make it easier to load.

Easy endcap removal.

Overall wouldn't recommend it due to low gas efficiency as the biggest detractor and just has a lot of inconveniences that make it frustrating to use. If it was more efficient, I'd recommend it as the reduced cost would outweigh the inconveniences, but as it stands, an inefficient mag means more money spent over time.

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KJW