Check out this excerpt from Wikipedia when I was knee deep in the middle of experimenting with .460 Rowland:
"Conversion kits co-developed by Wild West Guns and Jonny Rowland for the Smith & Wesson M&P
and Springfield Armory
Tactical striker type pistols, due to locking system differences, do not require use of a compensator. Slide velocity in these converted firearms is controlled with a change to the recoil spring alone.
Consequently, the converted firearm is lighter and more compact than a converted 1911 type."