Talk:Heavy Laser Cannon/@comment-201.217.82.145-20160229180612/@comment-132.3.65.82-20160229182426

No, you can not attack twice. (Unless another card lets you.)

The advantage is 4 attack dice. (Most primary weapons in the game are 2 or 3 with a couple exceptions.) Also it is a secondary weapon, so at Range 3, the defender does not get the extra agility.