I was in the hobby business for almost 40 years. We used allen wrenches everyday, all day. Cars, boats, helis, drones, planes. You name it, we worked on it. We had three guys in the service dept working on stuff 8 hours a day. We were heavy users of tools.
The best hex wrenches will have tool steel / high speed tool steel tips. In the airgun world, you will never wear them out. Precision fit. The problem with tool store wrenches is they wear out/round out the inside of the screw socket as well as round the edges of the wrench itself.
We used and sold Hudy. Not cheap. But the best we found for the money. There are other brands of HSP steel wrenches found in the hobby industry too. Be aware though, on 1.5mm wrenches if you are not careful and have ham handed you can and will break the tip off. you only need to turn the wrench until the screw stops turning.
I know it sounds like a commercial but beware of cheap imitations. Some brands have a Nitride coating to improve durability. they don't.
good luck