I got the same one but with the black grips, a few years ago. Terrible accuracy with BBs, but I only shot a dozen BBs through it once I discovered it had a rifled barrel. Since then I’ve only shot pellets (remove mag, insert pellet, reinsert mag) and the accuracy improvement has been absolutely dramatic.
Now, I have to rack it back and drop the mag for every pellet I place into the breech, which means that slide gets moved a lot. So I’m pretty liberal with greasing that slide. Some other CO2 guns I have are made of a sort of zinc alloy and the slides wear out in no time, no matter how well maintained. Not the Makarov … it’s all steel and just as tight as the day I got it. And I’ve put thousands of pellets through it