For LCT
➤ LCK-74 / MRK-74 / LCK-74M / LCK-74M Plum
➤ LCKM / LCKM (Stainless Steel) / LCKM Economy / M-LOK LCKM
➤ MRK-105 / M-LOK LCK104
◉Need to be used with PK167 LCKM Retainer: LCKM-63 / TX-63 / RPK ;
◉Need to be used with PK030 / PK343 Trigger Guard : M-LOK LCK104 / M-LOK LCKM
◉ if it non-LCT products,we can't sure compatible or not.