The official Halo Mega Bloks website has posted a printable coupon that you can print and take with you to any Halo Mega Bloks retailer to take $5 off of any purchase of $15 or more worth of Mega Bloks Halo Universe products. This coupon is valid until May 31st, 2012. So if you’ve been waiting to pick up the Halo Universe Scorpion and want it for $5 less, now’s your chance! Click here to print the coupon off the official Halo Mega Bloks site!