Must install for it to 'work' properly. - Griffin Armament SN-ACH 15 Gen 2 Charging Handle

While holding the charging handle in your hands, the ambidextrous finger tabs won't seem to work properly (only one side appears to work, unlike an AXTS handle or similar). But once installed, the charging handle works perfectly by pulling on just either side or both. Haven't seen how effective it is at redirecting gas yet. Nice quality part.