Haven’t used one, but for $25 I don’t know if I would be too concerned about it if I didn’t like it. That said, I don’t see really what this does better than a Magpul railed VG at the same price point or less(Probably a lot less from DSG since they have a clearance sale on all foliage green magpul stuff) other than hold batteries which honestly I don’t care too much for since I am generally trying to get rid of weight on the front of my rifle and not add more. That said, it is generally pretty hard to **** up a VG to the point where it is not usable.
I was an early MFT adopter. I bought a BULS stock when they first came out then pre-ordered a Minimalist as soon as they were made available for pre-order. I like their stocks a LOT. Their pistol grips are certainly passable. I have no experience with the piece of gear of which you speak, but it should be good to go. My only advice would be to buy their stuff in black unless you’re going full MFT furniture. Their colors are a little off and you’ll have trouble color matching to other manufacturer’s parts. Even their black is a little lighter than most. I trust them and their customer service is great. Buy with confidence.
I have one and it’s solid. Only complaint is that the storage plug is not attached to the grip so i can see it being lost or falling out over time. Otherwise I dig it.