Standard on all models certainly are a match-quality barrel, flat mainspring housing and velocity bump grip protection. Front straps have 25LPI checking and the mainspring housing has 20LPI for ideal grip and person comfort and ease. 9 lbs .. The pull is easy with a certain amount of acquire up. https://reidykpql.blogofoto.com/66600244/beretta-px4-storm-type-f-full-size-40-s-w-pistol-an-overview