Original U.S. Vietnam War Era US Air Force Security Police Combat Defense Force M1 Helmet Liner for the Strategic Air Command With Blue Beret - WWII Firestone Liner M3 Grease Gun Size is approximately US 6

Size is approximately US 6 3/4

with out any hooks for chin scales

Blade shows minor in and out wear and missing finish on the tip

the front rod trigger must be "set" by the rear trigger before the lock will fire

driving the militia and regulars from Quaker Hill on the 29th in a fight that cost the regiment 3 killed

Original U.S. Vietnam War Era US Air Force Security Police Combat Defense Force M1 Helmet Liner for the Strategic Air Command With Blue Beret - WWII Firestone Liner M3 Grease Gun Size is approximately US 6Original Item: Only One Available. This is a very nice example of a genuine WWII "High Pressure" helmet liner by Mine Safety Appliances (MSA). The liner was then reissued for post war use during the Korean War. The liner is marked on the left side with the unit insignia of the U. S. Air Force Strategic Air Command. Helmet liners such as these were often worn during training as well as a patrol helmet, as the steel helmets were not required, and could