The judge deferred sentence until a hearing early next year and Carlin was remanded in custody.
A total of 62 people have been arrested as part of Operation Portaledge – the police operation set up to investigate the spate of violent incidents.
The gangland feud has led to assaults, shootings and fire bombings across the east and west of Scotland.
A Scottish man currently based in Dubai is alleged to have started the feud by targeting a crime group led by Mark Richardson.
The attacks later spread across the west of Scotland where there has been rivalry and violence between the Daniel and the Lyons families dating back more than 20 years.
Violence raged through Glasgow and Edinburgh during the first half of the year, but incidents appear to have calmed down.
Several people with links to the Daniel family are said to have been targeted during the wave of attacks.
On 31 May, two prominent figures in the Lyons crime group, Eddie Lyons Jnr and Ross Monaghan, were shot dead at a bar in Spain.
Police Scotland has said there is no evidence to suggest that shooting was planned from Scotland.
A number of high-profile gangland figures were arrested in Dubai in September, but have since been released.