MacDev is "redesigning" the kit to include more pieces.
Overall I have no complaints with this product. The bore quality and milling is excellent. All of the pieces are perfectly aligned and the threading provides a nice tight fit on my marker.
This is a very nice alternative to the Freak. That is especially true since there aren't any inserts to worry about with this kit. It cleans itself of ball breaks much easier than the Freak and you can still match the most popular paint sizes.
Accuracy is everything that you would expect after reading the rest of the reviews here. Since you can match paint this thing makes any paint look decent.
On the downside I have read that MacDev is in the process of redesigning this kit to include more pieces. That would be a shame since the simplicity and low price are what make this kit so great. With more pieces presumably MacDev will also charge more $$$. If you can get your hands on the old 5 piece kit then go for it!
A word about the "case" that everyone is upset about...if MacDev included a nice field case with this kit it would likely cost another $20 or so. I'm glad they kept the price lower and provided a better product. Go pick up a small handgun case at your local sporting goods store. I found a decent one with hard plastic shell for less than $6.
I would get this kit if you can still find the old version. You would be hard pressed to find 6 quality barrels (3 backs X 2 tips) for $99! I just hope MacDev isn't making a big mistake by redesigning an already great product...time will tell.