I see this as making mountains out of molehills. The simple fact is the Sport II is priced decently, has good specs, and has basic furniture that really has no significant value should someone want to replace it.

Replacing the front sight assembly would cost more. If someone bought the gun intending to replace it immediately, I can see your point. If they decided to try it and then down the road decide something else might work better, I see that as a non-issue.

The Magpul rear sight is one of the less expensive folding sights. I don't see it as a big deal if someone wants to replace it.

CAR forends are a dime a dozen. So what if someone wants to replace it with a Magpul? Sure S&W makes a model with Magpul furniture. But, the one I saw at a dealer cost MORE than swapping Magpul furniture onto a Sport II.

So I see the Sport II as a good basic AR that can either be an entry level gun, or it can be a basic building block, or both.