Love this upgrade. A bit fiddly to install but well worth it imo. https://www.youtube.com/watch?v=lnGxINmRHpk Here's the difference the new shoulder parts make: Stock parts allow for a single ratchet click, x2o's allow for three. Which I went over thoroughly in the vid as well as what you need to do to swap em out and the new gun parts are nice too. For some reason the color difference seems way stronger in photo/video but in hand I really can't see it unless I look real close, though the gun pieces are definitely ever so slightly darker. Shoulder bits seem perfectly color matched however and x2o's plastic quality is great, seems like it'll hold up over time just as well as takara's.