One file containing both parts. Just snip them to separate..
ust cut the bull barrel off your AW Custom and replace it with this screen accurate versions. This model you need the following..
(6-32) tap holes
2 each - 6-32 x 3/16 socket button cap screw
you will need to drill into the barrel of the airsoft to make room for the screws. If you don’t want this extra level of detail I also designed this same bull barrel with these socket button screws as if they were already attached. Both work perfectly.