Lightweight BCG/buffer combo for running suppressed?

[BlakeJ]

I'm building an ultralight AR that I'll use my AAC Mini4 on.

It's a faxon 14.5" mid length barrel with an adjustable gas block. This won't be a competition, defensive, or plinking rifle. It won't have a ton of rounds go through it.

What is the lightest BCG/buffer combo that I can get while still being reliable?

[Sigproshooter]

Usually heavier is the key to keep dwell ,lock , ejection and the rest timed properly. With your adjustable block it should mitigate the added back pressure issues with a suppressed ar. Most folks find a standard fa carrier works best but moderate with a heavier buffer or a slightly stiffer spring. Surely cheaper for sure. Hope this helps.

[CanOfWhooppass]

I would look at the bootleg adjustable BCG. It has settings for suppressed to unsuppressed with two settings between.
I'm using one on a build I have that has a Syrac adjustable gas block on a 10.3" barrel. Nice setup, I adjust the gas at the block to work unsuppressed with BCG set to unsuppressed and adjust at BCG when I add a suppressor.

[Sigproshooter]

Another thing to consider is spec parts were chosen as a spec for a reason. You can get wrapped around an axle trying to get these things to run reliably if you start swapping parts around without understanding the exact problem you have. Once you realize the issue you address it specifically. Basically keep your upper factory, maybe swap a buffer or buffer spring. I use a Noveske Switchblock on my weapons. No tools and precise positions every time. Works like a dream.

[PBinWA]

You may also wan to look at the JP silent captured springs with the spring packs - that will also allow you to tune things. https://www.jprifles.com/1.4.7.2_os.php