A simple, yet effective upgrade for the Umarex VFC GLOCK series of magazines. 

The Nine Ball Gas Route Seal Bucking/Gasket improves upon the stock design by smoothing out the gas route channel for a more aerodynamic operation.

New cold-resistant material helps prevent freezing of the gasket, thus reducing possible gas leakage.

Compatibility: UMAREX VFC GLOCK SERIES
・GLOCK 17
・GLOCK 18c
・GLOCK 18c Long magazine
・GLOCK 19
・GLOCK 19x
・GLOCK 45