100% Risk Free, Lifetime Warranty Includes: 6x Chamber Safety Flag for Rifles Materials: High-density Hardened Polyethylene Compatibility: AR-15, Rifles with Picatinny Rail Weight: >1 oz/flag Diameter: 1.50 in Length: 0.50 in Height: 1.75 in Color: Orange Warranty: Lifetime The Monstrum Tactical Chamber Safety Flag is used to clearly signal your firearm chamber as empty to others when not in use. Built for use with all common rifle models and calibers including 22lr, .223, 5.56, and .308. Chamber flag includes a handy built-in flathead tool for adjusting rifle scope windage and elevation. It also includes a slide-on Picatinny rail adapter for conveniently attaching your flag between uses without losing it. Crafted from hardened polymer composite material to withstand use with the most rugged of firearms. Comes in a pack of six.