Head: Indiana Jones KotCS Russian Soldier
Torso/Arms/Hands: 25th Wild Bill
Legs: Ugha Warrior
Feet: Mutt Williams
Kilt: printable inkjet fabric
Sporran: sculpted
FN FAL: Marauder

When Palitoy got the licence to produce GI Joe as Action Man, they made a conscious decision to make uniquely British Army uniforms to make an easier sell in the United Kingdom.
One of the more unique items was the Argyll and Sutherland Highlander. I did not have this set, but it was high on my list for my 1:18 Action Man Project.
I sourced the tartan online and printed it out onto inkjet cotton for a more authentic look.