HSM Ammunition Starline Rifle Brass Unprimed Cases 30 Carbine Caliber 50 Per Bag. 30 carbine was used in the venerable M1 Carbine and the full auto M2 version. The gun of choice for many soldiers in WW11 the M1 is still very popular today. Ruger also offers the .30 Carbine in their popular Blackhawk revolver and new M1's are available from Auto-Ordnance. Specifications for Starline Brass Unprimed Cases 30 Carbine Rifle Brass: Manufacturer: HSM Ammunition Gun Type: Rifle Caliber: .30 Carbine Primed: No Quantity: 50 Fabric/Material: Brass Package Contents: Starline Brass Unprimed Cases 30 Carbine Rifle Brass