As with any mechanical device and fitted parts, there may be "slack". I would not be too concerned if it functions correctly. There are ways to "tighten" it up. One way it to use shim material (but that may work its way out with usage).
If it works and safety is not an issue, I would not worry about a little looseness.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)