Amazon.com: HASMX Replacement Trigger Switch L50 for Makita - Replaces Part Numbers 651172-0, 651121-7, 651168-1, Power Tool Replacement Part 24/12A-125/250V, Black (1 Pack) : Tools & Home Improvement
Switch trigger 6505739 650573-9 for makita BDF451 - AliExpress
Superior Electric L50 Aftermarket Trigger Switch 24/12A-125/250V Makita 651172-0,651121-7 651168-1 L50 - Walmart.com