APC9k upgrading picatinny 3-slot to 5-slot? : rBT_APC

UTG PRO 3-Slot M-LOK Picatinny Rail - UTG

MIL-STD 1913 Picatinny rail pattern allows mounting a Select Rail: 5 Slot M-Lok™ - GTSW236 5 Slot M-Lok™ - GTSW236 3 7 Slot M-Lok™

3 lucky witches slot This M-LOK Accessory Rail is 2 in length and provides a 3 slot section of mil-spec-M1913 Picatinny rail for the addition of tactical accessories

3 mermaids slot You deserve the best rail sections and AR 15 handguards at an honest price! Get a premium M Lok rail M Lok Handguard at a radically fair price