In large frame rifles and typical cartridges used, i.e., .308 family the adjustable gas block is the defacto component, but possibility of carbon locking up the block.
Question; has the adjustable gas key seen more use recently and are the adjustments likely to work loose? Rubber City Armory has a great product but I have not yet used it to (adj. gas key) know how well it works. Sorry for dumb question...