Versatile, utilitarian, looks good and works well - MFT Engage AR15/M16 Pistol Grip with 3 sets of interchangeable front and back straps - Black - EPGI16

I needed battery storage capacity. Like the idea of being able to try different inserts. Finger groove option was great, but I don't like them, so I went with the straight front strap. The medium back strap suited my hand best. i have smallish hands but longer fingers. All the inserts fit very snugly, so they're not likely to ever move unexpectedly. Initially, i had the EPG16 grips on the rifle, I prefer the more vertical angle of the EPG16, but they don't have a storage compartment. I have a UTG hand guard in FDE on this rifle, and the SDE is a real good match. I found the MAGPUL FDE to be too light, not a good match at all.