In spite of the robust provisions of the ECOWAS convention for the control of small arms and light weapons (SALW) in West Africa, Nigeria which is a leading Member State has been experiencing daunting challenges to personal human security posed by the large-scale availability of SALW. Although Nigeria has made some efforts towards the implementation of the Convention, the status of the country in that regard has not been clear. This paper sought to examine the nature of the implementation of the Convention in Nigeria with a view to determining the lacuna in the process and addressing it. In-depth interviews were conducted with relevant stakeholders and leaders of institutions such as the ECOWAS Commission and Nigeria’s Presidential Committee on Small Arms (PRESCOM). Secondary data were also used including official documents and researches related to them. The study revealed that Nigeria has failed to domesticate and implement the Convention accordingly. It therefore recommended that the Federal Government should urgently take steps towards establishing the National Commission and put the required structure and support to ensure its effective and efficient implementation.