Amend2 S300 Hybrid Grip Module, For Sig P320 Pistols with Sig P365 Magazines, Black A2A320HYBRID The Amend2 S300 Hybrid Grip Module is a grip module designed to function with Sig Sauer P320 style fire control units and complete slides" while allowing use of Sig Sauer P365 style magazines. The result is an easily convertible concealed carry firearm that can transition back to a full-size duty gun in seconds.