There seems to be some movement towards long handguards on ARs now. Is the only real reason being to cover up the gas block? Besides many civilian shooters, I've seen Mk 18s with the 9.5" RIS II, and now this M4 varient being used by MARSOC with 12.5" RIS II:
Anyone here using extended length handguards? Or are you sticking to shorter ones?



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