Even though the Model 1300 was introduced in 1978, the security series (similar short-barreled offerings), including the Defender, continued to be marketed as a Model 1200 until 1989, after which, it was advertised as a Model 1300. The security series had options for: rifle sights or bead, a rifled bore and pistol grip rather than a butt. A riot version was made, with a stainless steel barrel while a marine version also had chrome plating on other parts.
This sequence of events resulted in the continued sale of the Model 1200's security counterparts (comparable compact models), including the Defender, as a Model 1200 until 1989, after which it was repositioned as a Model 1300. The security line featured options for: rifle sights or bead, a rifled bore and pistol grip instead of a stock. A riot model was created, with a stainless steel barrel while a marine version also had chrome plating on other components.