Junk! buy something else - Elftmann Tactical Anti-Rotational, Anti-Walk Pins

first the good. they work as anti-rotation / anti-walk.
it is toolless

The bad. looks like its was press cut out of sheet metal with poor dies leaving sharp edges on one side. this is going to scratch your gun up or cut your finger depending on which way you face the sharp edge.
there is a little pokey tip on the side that is visible in the product pic if you zoom in. yup its sharp and will poke you.
pins are to long if you do not used included foam spacer.
while looks good in pic on gun it looks big and ugly probably should have just nitride the parts after putting it through a tumbler to get rid of edges, but they didn't so you will have a shiny multi colored plate on the side of your gun like when you heat metal up to the point it starts to change color.