M1911 Rubber band gun

I created a pistol from a YouTube video https://www.youtube.com/watch?v=hOXe1pWCC9M, I got the plane and I drew it in 123 design, it can be improved I do not have much experience I'm learning everything is done in ABS . I leave all the files so that they can be improved or redesigned.
He creado una pistola a partir de un video de youtube https://www.youtube.com/watch?v=hOXe1pWCC9M, consegui el plano y lo dibuje en 123 design, puede mejorarse no tengo mucha experiencia estoy aprendiendo todo est