Tekoop glock 17 gen4 co2

I hereby put my umarex glock 17 gen4 co2 with holster and grip laser and playroom that is that green bracket on the magazine that wood fastens the spring down so that you can load very easily whole set is in new condition I am selling it because I still have 2 have glocks and want to make room for a new pistol I'm open to an exchange for a hi-capa