Affordable handguard option for a2 gas-block configurations - VISM AR15 M-LOK Carbine Handguard

I'll start off by just saying I really like this handguard. I put one on my 762x39 AR. The finish is outstanding. The bonus of having two sections of Picatinny billet rail included is great. And installation is as simple as anything could ever be. I loved the handguard so much that I ordered a second one. The second one is where I found a little something to be concerned about but that is being addressed right now. On the second handguard I purchased I noticed the M-LOK slots on the six-O'Clock position of the handguard were machined oversized. They did not accept some of the Magpul M-LOK accessories. Well, more correctly, the accessories would fit into the slots but they wouldn't grab because the slots were slightly larger than they should have been. When I discovered the accessories wouldn't fit I examined the rail closer. That's when I saw that the machining was so oversized it was visible to the naked eye. Very oddly, every other section of slots around the circumfrence of the handguard was machined correctly. I can't imagine how this happened since I'm sure these are cut on a CNC machine. Nonetheless that was my situation. I didn't discover this until several weeks after having installed the handguard, at which point I had already discarded the box. Upon contacting customer service at OpticsPlanet I was referred to the manufacturer (VISM is apparently a division of the NC-Star company). A guy named Matt in customer service at NC-Star is working to get me a replacement handguard. The only remarkable disappointment is I'll have to wait for a while because they are out of stock at the moment and, with the current challenges surrounding the Coronavirus crisis, the date on which these will be shipped in from China is very uncertain. FYI: these are made in China so if you have a Chinesium allergy beware. Anyway the delay is not a huge problem for me since I have plenty of ARs to shoot instead. This handguard was for use on my Rock River Arms AR-9 build but I'll just use the standard GI handguard for a while until the stock is again available to have my replacement sent to me.