Sig P320 Grip Modules allow you to easily change the look and feel of
your P320 handgun. Simply drop in your P320 Fire Control Unit (FCU) and
install the proper slide assembly. P320 grip modules come in 3 different
girth sizes (Small, Medium, Large) and specific to different slide
lengths (Compact/Carry and Full Size). This Large Compact Grip Module
Assembly fits P320 models in 9mm, 357 Sig and 40 S&W.