I am new to ARs and reading about “rifle length” gas tubes and “rifle length +2” gas tubes. My new SP10 in 6.5 CM has a 22” barrel. I assume Seekins knows what length has tube works well Since they have a good reputation. Although I thought I read it had changed over time, like maybe the gas tube in newer models were made longer but I’m not 100% sure what I read. Does anyone know if it is a rifle length tube? Or longer? My new rifle is to arrive tomorrow. Thanks