Originally Posted by
purplezuk
I've got a giessele S3G SD in mine and it's running great.
I really prefer a single stage with less creep and over travel, but it's still very nice.
As far as the BCG and gas block, if you're building an 18.6-20" 223 Wylde with rifle gas and a full mass bolt carrier, your just wasting your money on the adjustable gas block.
My 20" setup with rifle gas and an ascend armory titanium brake is probably the softest AR I've ever shot and over 1000 rounds without a single failure of any kind.
Now I'm doing some testing with an 18.6" 300 blackout, and it's not going to work with standard parts... I've got it cycling perfectly after some modifications, but I'm going to try a light weight carrier in it with standard parts elsewhere because ideally id like to not have to swap parts in the lower when I change uppers.
I will give details on what I find so that others interested in doing a blackout can get a reliably functioning NR setup