▁▁ ▁Con version ▁between ▁P x 4 ▁Storm , ▁ 9 2 / 9 6 ▁and ▁ 8 0 0 0 / 8 0 4 0 ▁C oug ar ▁ 9 × 1 9 mm ▁Par ab ell um /. 4 0 ▁S & W ▁mag az ines ▁requires ▁two ▁parts ▁( not ▁included ▁with ▁rif le ). ▁ ▁For ▁P x 4 ▁mag az ines ▁the ▁C 5 C 6 2 0 ▁magazine ▁insert ▁and ▁C 8 9 2 1 0 ▁magazine ▁release ▁button ▁are ▁required , ▁for ▁ 9 2 / 9 6 ▁the ▁C 5 A 5 1 1 ▁insert ▁and ▁C 8 9 1 0 9 ▁release , ▁for ▁C oug ar ▁the ▁C 5 A 6 7 0 ▁insert ▁and ▁C 8 9 1 1 0 ▁release . ▁ ▁The ▁C X 4 ▁Storm ▁includes ▁a ▁Pic atin ny ▁rail ▁and ▁tri - ra il ▁( bottom ▁and ▁side ▁rails ) ▁for ▁access ories . ▁In ▁addition , ▁the ▁C x 4 ▁is ▁partially ▁amb ide xt r ous . ▁Left - hand ed ▁shoot ers ▁can ▁switch ▁the ▁safety , ▁co ck ing ▁handle , ▁e jection ▁port , ▁and ▁magazine ▁release ▁to ▁the ▁left ▁side ▁of ▁the ▁fire arm . ▁ ▁Use ▁in ▁crime ▁and ▁mass ▁shoot ings ▁ ▁In ▁Canada , ▁the ▁C x 4 ▁Storm ▁was ▁the ▁primary ▁weapon ▁used ▁in ▁the ▁ 2 0 0 6 ▁Daw son ▁College ▁shooting . ▁The ▁restricted ▁class ▁fire arm ▁had ▁been ▁acquired ▁leg ally , ▁and