Midwest Industries introduced MP5/SP89 handguards with M-LOK systems.
MP5 handguard is priced at $119.95
https://www.midwestindustriesinc.com/product-p/mi-mp5m.htm
SP89 handguard is $105
https://www.midwestindustriesinc.com/product-p/mi-sp89m.htm