Handgaurd size upgrade

i want to upgrade my handgaurd on my ldt hk416d 3.0 btut im unsure on what else would ntt to be upgrades and that sizes everything would need to be to fit together, pls help me. thnak you in advance

Depends what length you want? The options are quite limited but i can show you some options tho most of what I’m showing is from monkee mods and a lot of them are already sold out but it gives you an idea on what you could get

A lot of these handguards would require you to get a low profile gas block otherwise you either don’t put it on or have to do some sanding to fit.