This is true 5.56x45mm mil-spec, new, unfired, heavy duty brass with that is recent production with a Lake City headstamp. It is the same brass
Fall 2023 Premier Firearms & Militaria Auction - Day 1 by PoulinAuctions - Issuu
How to reload .223 ammunition - Quora
What is the exact weight of a US Army 5.56x45mm NATO round, including casing, bullet, powder, primer, etc.? - Quora
Linked M855 5.56 SAW Ammo 1600 Rounds in M249 Saw Boxes - Weapons World
308/7.62x51mm Ammo Deals
When comparing ammo cost in the long run, is it cheaper to reload your own 556/223 rather than use 22lr? - Quora
Lake City Brass « Daily Bulletin
Is there a large subsonic caliber that works with battle rifles (308/7.62x51) the same way 300 Blackout works for 5.56x45/.223 guns? - Quora
Lake City Brass 5.56x45mm NATO New Unfired Box of 500
Deals for 223/5.56 caliber
Who makes the best bullets for reloading? - Quora
Winchester XPR Hunter 308 Winchester, 22 Barrel, TrueTimber Strata Camo, 3rd - Impact Guns
Is reloading .223 ammo worth it? - Quora
