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

"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.

"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.