Step up your game with this 50rd magazine for your Gas Blowback Maruzen MP5K Kurz.
Please take note that you may only use HFC134a Gas otherwise you may damage your GBB.
If you're interested in this product, please make sure you already own, or is considering to purchase the Maruzen MP5KA4 Kurz
Silicone spray is necessary to maintain spare magazines, especially in dry climates such as North America and parts of Europe. O-rings may dry out, crack and start to leak gas, rendering the magazine inoperable.