Decides that the arms embargo shall no longer apply to supplies of weapons with a calibre of 14.5 mm or less, and ammunition and components specially designed for such weapons, to the CAR security forces, as notified in advance to the Committee. Further decides that arms embargo shall no longer apply to supplies of arms and other related lethal equipment that are not listed in paragraph 2 (g) of the resolution to the CAR security forces, as approved in advance by the Committee. Decides that the Member State, international, regional or subregional organization supplying the materiel is primarily responsible for notifying the Committee and that such notification must be at least 20 days in advance of the delivery of any supplies as permitted. Modifies the exemptions requirement from an approval process to a notification process for supplies of non-lethal military equipment intended solely for humanitarian or protective use, and related technical assistance or training. Decides that the arms embargo shall no longer apply to supplies of small arms and other related materiel for armed wildlife rangers of the Chinko Project and the Bamingui-Bangoran National Park to defend against poaching, smuggling of ivory and arms, as notified in advance to the Committee. Provides details to be included in notifications and exemptions requests to the Committee.  Decides that the CAR authorities shall update the Committee by 31 December 2019 on the progress achieved in the SSR process, DDRR process and in the management of weapons and ammunition. Requests that the Secretary-General update the Security Council, no later than 31 December 2019, on the progress achieved by the CAR authorities on the key benchmarks.