ZKS-74M / LCK-74MN / LCK-74M / LCKS-74M / STK-74 / LCK-74 / LCKS-74 / LCKM / LCKM (Stainless Steel) / LCKMS / LCKMMS / LCKM Economy / AIMS / G-03 / G-03M / LTS-Keymod 13.5 / MRK-74 / ZK-104 / LCK-104 / LCK-105 / G-04 / G-04M / MG-MS / TX-M / TKMS / TIMS / TK-104 / TK-105 / TK-102 / AIM Carbine / MRK-105
- Handguard tension spring is required for following models: LCKM-63 / AMD-65.
- Metal part should be removed before installing onto following models: LCT PP-19-01 / ZP-19-01 / TK-PDW-9MM/ ZK-PDW-9MM / LPPK-20
