Dont buy a replacement Milwaukee chuck buy Rohm
I have a Milwaukee m18 cordless drill.The chuck locked after very little use.I had to slice the top part of the chuck with a angle grinder so that i could get to the chuck screw.After reading all the other bad Milwaukee chuck reviews on many other sites. I went for a new Rohm drill chuck instead of a Milwaukee.They are such a superior chuck in every way.I would highly recommend them to anyone. Come on Milwaukee get your act together and listen to your customers.They all cant be wrong.