Absolutely! The A5 went through a design change awhile ago. This is the newer grip with a selector switch safety. This newer A5 is referred to as the 2011 A5. So, Yes. The A5 2011 Mechanical grip shown below is backwards compatible with the pre 2011 A5 markers. This exact grip shown will also accept the response trigger kits but it will NOT accept the electronic boards. This grip is the mechanical version and does not have the battery compartment built in.
NopeNopeNope. The Tippmann Response Trigger (RT) Kit for X7‘s is designed for the original X7’s with blowback style operation. The newer X7 Phenom, sometimes just referred to as the Phenom, has a completely different type of valve system that is not compatible with how the RT kits work. If you want to upgrade your mechanical Phenom trigger you can convert it to electronic with an E-Grip kit.