good news and bad news.....
good news.... looks very nice
bad news ...... your compensator is most likely considered a suppressor under the NFA rules. by looking at the picture you posted it would appear that the muzzle diameter is much larger than .22 caliber , probably .40 to .45 caliber ..... this would be considered an expansion chamber and since the ports do extend into the expansion chamber it definitely meets the criteria under the NFA...... as .22s are a fairly quiet round anyway, my guess is that this would alter the sound pattern significantly.
remember, the suppressor need not quiet the weapon, just alter the sound patterns. and you dont have to INTEND to do, it just has to happen. ..... granted, all this is just a guess but i would wager a large sum of money that i am right.
btw.... the bad part of this has no merit if you are outside of the USA.