Complex sentence: First, it allowed them to depart from the classic 3 ¾-inch format of the "A Real American Hero" series of the 1980s; all "Sigma 6" action figures stand at approximately and have more articulation.
Split into simpler sentences: First, it allowed them to depart from the classic 3 ¾-inch format of the A Real American Hero series. All Sigma 6 action figures stand at approximately and have more articulation.