I fitted this Hanguart to the TTI AAP-01 CNC PCC Kit for my AAP-01 carbine build. I have to say, normally I dont like to write reviews, but the quality and how easy was to fit this hanguard, compels me to write one. For any AAP-01 carbine builders out there using the TTI PCC kit, this hanguard fits perfectly, you dont even need to use the washer that comes included, you only need to align the to piccatinny rails to match. It was a breeze to fit. Highly recomended.The Hanguard looks gorgeous too. It was my first time doing any sort of airsoft build.