Notice a trend?
Most recently I added a Magpul MIAD grip. I bought this particular grip on a bit of a lark. I was just going to get a MOE grip in FDE, but Amazon was carrying the MIAD and it seemed cool so what the hell?
I'm really happy that I made this particular purchase. The MIAD has interchangeable back straps and that is something I had a need for. I've noticed that my hand is way too close on the small standard grip. Operating the trigger was awkward and uncomfortable as a result. I sucked it up, and I could shoot fine, but the new grip with the large back strap has really improved ergonomics. I've done a bit of dry firing and it's a huge improvement.
The MIAD also allows you to store a few small things in the body of the grip in a small storage core. The storage core it comes with will hold a couple of rounds of .223/5.56, but you can buy others that will hold batteries or even bolt and firing pin. I'm thinking about picking up one that holds CR123A batteries for the flashlight I have mounted.
Along with all that the MIAD also has interchangeable front straps and some really aggressive texturing on the sides and back strap. The textruing will be nice in a sweaty situation, but it's aggressive enough that it could be uncomfortable for some shooters.
Hopefully later today I'll be getting out on the range to do some shooting. I think it will be a LOT more enjoyable now that I've replaced the safety with an ambi model and replaced the grip with something that suits me better.