I only used marbalizers with this barrel, they worked pretty good.
Makes the gun compact
This barrel is only 5 inches long and has no porting, so its alot louder than other barrels, but I personally like it to be loud. I shot 3-5 shot with my J&J then shot 3-5 shots with this and had nearly the same grouping at about 80 feet, the J&J was a little more accurate. I also have a stock on my gun, so it looks hilarious with the short barrel and stock.
I think this barrel is a great addition to any collection, its great for close quarters and ok at long range.