In the study carried out are highlighted particularities of subjective side of the offenses mentioned in art.290 and 291 PC RM. The offense provided in art.290 PC RM can be committed exclusively with direct intention. Purpose is not basic sign of offense provided in art.290 PC RM (except stealing of firearm and ammunition) because it is not indicated expressly in the content of incrimination norm and it is not result implicitly from norm disposition. Taking the firearm or ammunition in temporary use cannot be classified as steal but as illegal procuring. The term „negligent” from art.291 PC RM aimed the objective side, but not the subjective side of the offense. Also, is recorded that it generates confusion obvious interpretation and application of the criminal law, creating the false impression that the perpetrator can manifest only negligent against committed prejudicial act. It is argued that the offense under art.291 PC RM (in the manner of negligent storage of a firearm or ammunition) can be committed with negligence and with direct intention.