Quoted:
I think some guys have pressed their out. Later they grind the inside and then install and pin them.
Doesn't say too much on how well they will stay in place over time however, if they will come off that easy that is a much better way to go.
I am only concerned that parts are being staked onto rifle barrels, specifically if the stake (dimple) is deep enough to hold the parts securely to the barrel, what does that do to the inside of the barrel and the rifling ("for every action, there is an equal but opposite reaction").
This low cost production process is pretty standard when making appliances and toys but I just cringe when I see it a applied to a firearm, even a "Sporting Rifle". Makes sense for an Air soft Rifle however, even those toy parts are getting very close if not usable (not recommending) on a real firearm (metal parts, wood parts, etc).