Lmt carrier = noticeable difference?

[vicious_cb]

I would highly suggest getting a properly ported barrel over an adjustable gas block on any AR you plan on using for Duty/SD. No matter what the design is, that adj. gas block will eventually either adjust itself or stop being adjustable if it didn't already throw its innards 10 yards down range.

[Potss]

Well I guess we'll just agree to disagree slightly on that one point Mistywolf, really just around optimization vs. raw function and in what conditions.

vicious_cb, do you have some evidence of unreasonable failures in SLR, SA, and Seekins blocks? I haven't encountered anything beyond QC/getting it stuck because you don't use it (as I mentioned before) myself or online. Now I don't have any super high round counts, but I have an SLR block closing in on 10k without issue. Seems they'd last at least as long as the barrel.

I understand where and when the reputation comes from, but it seems like the latest rendition of the technology has ironed a lot of the past problems out. Seekins is even shipping their SP10M (the mil/LE version) with their detent adjustable gas block. Adjustable pistons have existed forever with little to no issues as well.

Again I'm not trying to say everyone SHOULD put them on a duty rifle, I'm just curious about failure rates for my own uses.