The cylinder is made of steel and have been surface treated to ensure low friction and high durability. The placement and size of the decompression holes have been designed to help give maximum compression thus increasing the effect.
For MP5K/PDW series.
ULTIMATE®’s cylinder parts are designed to give the best possible air compression and durability. For this reason we recommend always using ULTIMATE® cylinder parts and not combining or mixing with other upgrade parts as this can affect the result and performance of the upgrade.
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