Space Riders #1 seems to be pretty big with readers. It's so big that before it even hit shelves, it managed to sell out at the Diamond Distributor level and on April 1, the issue flew off the shelves. Black Mask pays attention though and they're rushing the first issue back to a second printing. The Space Riders #1 reprint features an all new cover by artist Ralph Niese. It will be on shelves May 13, the same day as issue #2.
If you want to get copies of Space Riders you can make your comic shop clerk's life easier by using the order codes for the books:
Space Riders #1 (2nd Printing)- FEB158576
Space Riders #2 (still available)- FEB151093
Space Riders #3 (still available)- MAR151021
Space Riders #4 (still available)- MAR151021
Full press release below.