They're unresponsive, buggy, recoil is crap, and they are overly complicated.
Since they are based off of BF3, I should be able to hit someone with a sniper rifle, correct? In BF3, you would hold your breath, and take a shot, compensating for bullet drop. But with the Blockland weapons, the spread is too apestuff to be able to efficiently kill someone at a distance. You would have a better chance of killing someone spamming a machine pistol from across the map than killing with a rifle.
I know they tried to make them good weapons, but they ended up being a pile of stuff with a cherry on top, thinking that being based off of Battlefield 3 would make it all better.