MTM Chamber Indicator Flags are made of rugged polypropylene right here in the U.S.A. Brightly colored for easy recognition of an empty firearm chamber. Sold as an 8-pack, includes four pistol flags and four rifle flags. MTM is family owned and operated. MTM Molded Products Company is a plastic injected molding facility with a primary focus on the shooting sports. Established in 1968, MTM began with a simple idea of storing ammo and currently offers a broad range of products: ammo boxes, ammo cans, ammo crates, handgun cases, reloading supplies, dry storage, shooting rests, target stands, and gun maintenance supplies specifically designed for the shooting sportsman.