Liberty's Defense
Belt-fed-rated multi-material cover sold through Dead Air. Amorphous silica, basalt, aluminized silica, and Kevlar over a marine stainless cable retention.
The StraightJacket is what shows up on belt-fed hosts and full-auto demo cans. It is the most expensive cover on this list by a 2x margin over the BPG Heavy, and it is the only one with a published belt-fed test claim — Liberty's Defense states a 700+ round belt-fed pass without cover failure.
The construction is layered specifically for that use case. Outer protection is amorphous silica and basalt fiber; the middle adds aluminized silica for radiant-heat reflection; the inner contact layer is Kevlar with stainless thread reinforcement. Liberty's rates the system to 2000°F continuous use and 3000°F for short excursions. Retention is a marine-grade stainless steel cable with a snap shackle, designed to survive the same heat environment as the cover body itself.
Fit is model-specific for the Dead Air family (Sandman-S/L/K, Sierra 5, Nomad, Lazarus), reflecting Dead Air's distribution role. For PRS bolt guns and slow-paced rifles, this is overkill. For an M249-pattern host, a transferable M16 with a can on the muzzle, or a demo rifle that runs cans red-hot, this is the only verified cover that survives.
Add the Liberty's Defense StraightJacket Suppressor Cover to your build and see how it enhances your platform.