I tried the LOK-1 (13212) with seeker rounds for the first time in ages yesterday and it's way better than I remembered??? I feel like a heretic saying this but it might be better than the shotgun, save for the turret whip (and OCs I guess)
sure it's not great for immediate reactions but I'd argue the shotgun also struggles with that beyond the first shot (OCs are still a wildcard)
on most occasions I feel like locking onto 5 different enemies with zero effort from a decent distance away is far better than only being able to use your primary within spitting distance of a target
I guess the shotgun is far better when it comes to defending a turret nest, but I generally prefer using shredders for that when the situation gets sticky enough, also the turrets tend to do a good enough job at keeping melee enemies at bay anyway
also funnily enough even though I'm praising an autoaim rifle I always run the m1000 on scout
edit: configuration & wtf is a m-lok