◉ Non-LCT products can't be confirmed the compatibility。
◉ Handguard tension spring is required for following models: LCKM-63 / AMD-65.
◉ TX-MIG / LTS Keymod 9.5 the installation required to be placed with PK-167 LCKM Retainer
◉ Metal part should be removed before installing onto following models: LCT PP-19-01 / ZP-19-01 / TK-PDW-9MM/ ZK-PDW-9MM.