SYSTEMA HOP UP BUCKING FOR AIRSOFT AEG RIFLES (ZS-07-01)

Systema's new hopup liner is made with precision and strong silicon optimized for both automatic and semi-automatic quick firing.

Features:
Semi-auto and fully self-friendly.
Anti-deterioration from atomized oil grease.
Anti-heat. High tolerance against hot exhaustion which normally causes counter-trend hardening or deterioration.
Cylindrical ring sleeve included with every Systema purchase for greater precision, air tightness and strength!