Immediately sliced my finger open - Presma AR-15 Super Light M-LOK Series Free Float Handguards

This seemed like a great handguard as a decent price so I ordered it. It was the last component I needed to complete my build so I was excited to use this handguard. When it came in the mail I immediately took it out of the box to install on my AR and it sliced my trigger finger wide open. Not a small slice mind you, I mean serious, blood pouring, running along my hand and dripping on the floor if I took the pressure off it would continue to gush slice. I absolutely couldn't believe it! Never in my life have I dealt with something like this from just simply handling a part. The cuts for the picatinny rail were made so thin, at the edges they're like a razor if you apply any sort of slide or pressure. Now imagine you have a rifle you're holding, maneuvering at the range or wherever, and you slide your hand down the handguard to switch position or release the magazine, whatever, and your bleeding all over the place for no reason! This was so sharp I didn't even feel it until it was gushing. It was wild and I wasn't sure if I would need stitches. After about 30 minutes of very firm pressure and bloody paper towels the bleeding finally slowed to a trickle. I call the manufacturer to kindly let them know what happened and the guy on the phone didn't seem concerned at all. "What do you want me to do about it?" And I just told him, "I don't want anything, Optics Planet is handling this for me, but they told me to call you and inform you so y'all could check your product line." And he said, "Umm, sure I'll check." I don't think he checked and probably just thought I was a fud lying or trying to get something for nothing. To be honest, this was insane, I'm sure it's not on all their rails, but definitely something to be mindful of. In the meantime I'm going to buy a Trybe, Seekins, or similar handguard that may cost more, but at least won't slice me open like a sausage.