In addition to a fine array of AR-15 assault rifle variants, CMMG makes Tactical Sammiches, shelf stable sandwiches that can be stored for up to 2 years. If that’s not shelf stable enough, their Tac Bac bacon lasts for 10 years. Either are perfect, when paired with one of CMMG’s M4 carbines, as a light post-apocalyptic lunch. ThinkGeek sells both tactical snacks and created a video promoting Tactical Sammiches. ThinkGeek does not sell M4 carbines.