Hello! I need some help. I have a Mossberg 500 Crusier and recently purchased a Surefire slide with integrated light. My Mossberg is stamped as an 'A' model and will not fit the slide. My current Mossberg is equiped with the long action assembly and, through process of elimination, I should need the short action assembly. Just to make sure, is there anyone out there who has a Mossberg 500 with a Surefire weapon light on it? If yes, I am hoping you can message me your model number and discription of your weapon, only for the purpose of providing it to Mossberg customer service to ensure I am ordering a slide assembly that will work. Thank you in advance!