AeroTech RMS-54 54mm 延長プラグ付きねじ込み式前方クロージャー - 54FCEPT

Threaded fit is perfect on the 54mm case threads, no wobble or cross-threading even after a few hot flights. Screws in clean every time and holds the delay element snug. Exactly what I needed for the reload kits.

Finally got around to swapping this forward closure onto my RMS-54 case, and the threads are machined clean enough that it seats without any binding. No leaks on the first flight, which is exactly what I want from a plugged closure for my high-power reloads.

Threaded right onto my RMS-54 case with zero binding, and the plugged design means I don’t have to hunt for a separate cap. Fits all the reload kits I’ve got on hand — just make sure you’re not mixing in mid power stuff, that warning is legit.