For LCT various designs LCK except
LCK-74 / LCK-74M / LCKS-74 / LCKS-74M / LCK-74MN / STK-74 / G-03 / G-03M / ZKS-74M / LCKM / LCKMS / LCKM Economy / LCKMMS / AIMS / TIMS / TKMS / LTS-Keymod 13.5
LCK-104 / ZK-104 / LCK105 / AIM Carbine / G-04 / G-04M / MG-MS / TX-M / TK-102 / TK-104 / TK-105 / MRK-74 / MRK-105 ;
■For use with part: ZB-31
