Tdi interchangeable grips - Tdi Arms AR15/M4 Interchangeable Firearm Grips

Way more comfortable tham many other grips out there. Once you've figured out which combination front and rear grip piece works for you then you're done. They give you 2 roll pins to put in each piece to secure them...but you font have to use them. I did cause tgey install by hand easily. These are well worth the money. The other reviewer wh9 gave them 1 star obviously didn't know what he was doing or how to install the pieces correctly.