Choosing the right Stack-On gun safe Stack-on gun safes provide protection agains storms, flooding, fire, unauthorized access, theft, and much more. ... Elite 30 Gun Safe. Firearms. Up to 35. Size (in) 59h x 29.25w x 20.25d. Weight. 421 lb. $799.99 *Average pricing. View details. Total Defense 40 Gun Safe. Firearms. Up to 45.