An OK legislator has introduced a bill to fund a study into incorporating microstamping into firearms presumably at some point in the future. The NRA has come out in favor of the study. This has some of the more rabid gunnies (and here you thought I was bad) panties in a knot.
I think the study would be useful in that it would let the Dem legislators vote for something that would likely do no harm, if done honestly, and still be able to tell their constituents they're doing something.
Again, done honestly, with close adult supervision, the study would conclude that microstamping is a colossal waste of time and money.
On the other hand, I was at a pistol match today, and to judge by the enthusiasm with which the spent brass was being policed, I'd guess that most of the shooters would pay a bit extra for a mod to their guns that would imprint their names and addresses along with a message like "if found, please return to Fred Gunnobbler, 40 Smith Ln, Freerange CO, 80380".
I mark my brass by painting the rear red using Dykem metal marker, which sticks well enough that it's the last thing removed in the tumbler. This serves a double purpose as I shoot 9x18 Makarov in my CZ, and reload using 9x19 (Luger) brass I find at the range. I trim the cases back 1mm to do this, and if they were used to reload 9x19, would probably yield less than satisfactory results.