GBLS - GDR15 / 416 M120 Main Spring



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GBLS - GDR15 / 416 M120 Main BCG Spring 

GBLS DAS GDR 15 upgrade or downgrade spring purchased from GBLS will be used/installed at the owner’s discretion. Actual performance results depend on the quality of installation,

Airsoft AEG types inner barrel length, tightness of the air nozzle seal, and other possible performance-affecting factors. We are not responsible for any damage that may occur with improper installation. For best results, please do all upgrades at a certified professional Airsoft technician or GBLS .