Nerf Revoltinator Muzzle Brake

The Nerf Revoltinator has the same provisions to mount accessories on the end of the barrel as the Retaliator. I measured the features and modeled this muzzle brake in FreeCad 0.18. It fits both just fine. There may be other Nerf blasters with the same features, I don't know. I printed the version with the square ports. I liked the look better but it required support touching the build plate as well as inside the holes. The support in the holes was tedious to get out. I drilled a 1/4" hole through the support first, then used needle nose pliers.The 2nd version has round ports. Although I didn't print it, support shouldn't be needed in the holes. However, support touching the build plate will still be required below the angled faces of the two side features. Also, the rounded version would probably be better suited for kids because the square version is quite pointy.

I've included a png with the dimensions I used for the locking lugs that interface with the barrel features of the bla