2011 Modules Only Model AA1 (Trigger Guard front Measurement below .370") Infinity/SV (Excluding extended trigger guards) Original STI Grips Model AA2 (Trigger Guard front Measurement above .370") Infinity/SV (Excluding extended trigger guards) Original STI Grips Model AE1 Infinity Extended Trigger Guard Vulcan Machine Model BB1 Cheely E2/L2 Vudoo (Early Vudoo grips will need the o-ring removed) Race City Defense Fowler Vanta 9 Henning Apollo Arms Cardinal G2 Model BB2 Staccato Gen 2 DOES NOT work with the HD p4.5 or p4 Race City Defense (Trigger Guard front Measurement above .362") Model CA1 MPA Icarus Aluminum 2011 LSI (Post 2019 Grip) Model CB1 (Trigger Guard front Measurement below .361") Atlas Alpha Grip NightHawk PT EVO DarkForge Viking Model CB2 (Trigger Guard front Measurement above .361") Atlas Alpha Grip NightHawk PT EVO Model CD1 Notched Kimber 2k11 (See Pic) Model DA1 Limcat Model EC1 Non Notched Kimber 2k11 (See Pic) MJD Where to measure for width? Disclaimer: Our fitment is much more than just width. This is just to verify if you need a wider insert within the one designed for your grip model. Swap Out