Dunno if it's been posted, but buy the lower and upper from the same mfg, so it's way more likely they'll line up with no wobble.
If ya buy em in person, put em together and check fit.
Wobble between the upper and lower is cosmetic.
So, spend your hard earned money on a wobbly fit.
That way, ever time ya shoot it, ya can think ta yourself, "it's only cosmetic."
Sounds like fun.
