Here's a great review of Black Rain Ordnance by The Truth About Guns.
http://www.thetruthaboutguns.com/2013/11/foghorn/gun-review-black-rain-ordinance-bro-pg11-18/
Pictures below of Silver Skulls .308 PG13.
http://www.thetruthaboutguns.com/2013/11/foghorn/gun-review-black-rain-ordinance-bro-pg11-18/
Pictures below of Silver Skulls .308 PG13.