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Ultimate Cylinder M4A1/SR16 401-450mm

Ultimate Cylinder M4A1/SR16 401-450mm


The cylinder is made of steel and has 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 M4A1/SR16, with an internal barrel length of 401-450 mm.

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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