I'm looking to get my first NFA item and am torn between these two choices. The price difference is very minimal so won't be a factor. I'm pretty much a complete "noob" with suppressors but from what ive heard with the Ospreys the .45 and 9mm will both suppress DBs the same unlike many other models. The chance of using it for calibers wider than 9x19MM is also pretty slim so I'm leaning towards the 9mm version for the fact that it has slightly less weight. Lastly, it's my understanding that with these Ospreys I won't need suppressor sights? Thanks in advance everyone.