Crusader VFC M4 GBBR Two Stage Trigger KitThe Crusader Two Stage Trigger Kit is a revolutionary upgrade part for the VFC and Umarex (VFC)'s M4 AR, SR25 and 416 series of GBB rifles. This is the world's first ever production true two stage trigger kit for airsoft gas blowback rifles and it is constructed in full steel. The two stage trigger offers a bit of slack before reaching the "wall", which then will enter the second stage where there is an about 3 pound pull before having the trigger