#41 5.56 & 30 Carbine NATO Spec Primer 5000 Count Case by CCI-Ammunition Product Overview offers the CCI #41 5.56 & 30 Carbine NATO Spec Primer (5000 Count Case). The #41 5.56 & 30 Carbine NATO Spec Primers are produced to specifically match Mil Spec design for function in semi-automatic firearms. The CCI #41 5.56 & 30 Carbine NATO Spec Primers are harder to ignite which will reduce the chance of slam fires. If you reload for military cartridges and the CCI's #41 5.56 & 30 Carbine NATO Spec Primers are perfect for that application. CCI #41 5.56 & 30 Carbine NATO Spec Primers do not have mercuric or corrosive compounds. Summary The CCI #41 5.56 & 30 Carbine NATO Spec Primers are a great choice for reloaders that use military cartridges. The CCI #41 5.56 & 30 Carbine NATO Spec Primers are specially made to be harder to ignite which prevents slam fires in military type rifles with no spring on the firing pin.. CCI's innovative non-corrosive and non-mercuric chemical formula keep you safe while in contact with the primers. Specifications and Features: Mil Spec SensitivityNon-CorrosiveInitiator mixed for ball powder Easy to seat