Thanks to eerw CZcustom did my first Sp01 shadow . absolutely love the gun . I was about order a S2 . Than I ran my friends for a while and ordered another Sp01 shadow SAO wow so much more balanced for me than S2. Had my Friend run my S1 SAO and after hitting the 100yard 12in plate 4times out 0f 10 rd, he sold his S2 and got Sp01 shadow. I have big hands XL gloves are some times tight on me. S1 is still much more comfortable. And can be used in IDPA and USPSA .
Good luck