I got the Avengers version because I like the purple color better than yellow. I can always sand off the Avengers logo. I added a stampede spring to it so it is more powerful. I found that a stampede spring is better in the BBB than a nf spring. This is because the stampede spring is longer. I changed the barrel to cpvc and removed the dead space with hot glue. I didn't glue any specific couplers to it and it works fine for me. It has an almost perfect seal too. I made an RSCB clip for it and it can hold 4 streamlines or
8 of my stefans (which are about half the size of streamlines). I plan on testing the ranges very soon. It is really awesome.