I have been looking for a Gemtech SBC and the Bootleg carrier for a while and they seems to be as rare as hens teeth right now. Did these two companies stop making them? The Bootleg, I can find in the light weight version, but the full auto one is harder. I can't find an in stock Gemtech one at all however.

Is going with a standard carrier and a heavier buffer/spring a preferred way to go? FWIW, I want one of the two above mentioned carriers because I just got a Noveske barrel with a pinned GB and I don't want to mess around with an adjustable GB if I can help it.

What are people using to reduce their carrier speed now a days? Special suppressed carriers, AGB, or something else?