Complex sentence: The RCAF Museum in Trenton, ON has a full-sized model of the Velvet Glove missile, as well as an actual test model with sabot designed to be fired from a 5.5-in medium artillery barrel (smooth-bored to 5.9-in).
Split into simpler sentences: The RCAF Museum in Trenton, ON has a full-sized model of the Velvet Glove missile, as well as an actual test model with sabot. The latter was designed to be fired from a 5.5-in medium artillery barrel (smooth-bored to 5.9-in).