Mustang Re-Arm Kit MA7114 PRODUCT FEATURES Kit includes:1 - 33 gram CO2 cylindar.Bayonet assembly.1 bobbin (for use with MD2053/MD2087/MD3053/MD3054/MD3083/MD3084/MD3087/MD2983/MD2953) For use with Mustang Models:MD2051/MD2053/MD2981/MD2983/MD2951/MD2953/MD3051/MD3052/MD3053/MD3054/MD3070/MD3071/MD3075/MD3081/MD3082/MD3083/MD3084/MD3085/MD3087. Also compatible with MD2085 and MD2087.