I want to add a flashlight to my Remington 870P, but dislike the price (and look...) of the Surefire forend. What are some good alternatives for attaching a flashlight? Will a side saddle flashlight mount fit securely enough so that it won't move while firing? I've never tapped a firearm for mounts, so I'm hesitant to do that, but not against it if it's the best option.