AeroTech RMS-54 54mm 堵塞式螺紋浮動前端閉合裝置 - 54FFCPTS

The threads on this forward closure are cut cleanly and it seated into my 54mm hardware without any wobble, which matters when you're prepping a reload the night before a launch. The retaining ring is a nice touch too, no more digging around for a loose snap ring in the grass.

I was worried about fit with my 54mm reloads, but this closure seated flush on the first try. The included retaining ring is a nice touch since I always seem to misplace those. Flown it twice now with zero issues.

The retaining ring threads on perfectly and holds everything snug—no wobble or play when I seat it on the reload. Fits my RMS-54 cases exactly as it should, and I’m glad I grabbed this instead of hunting for a used part.