Gunfighter IV Allen key size?

[mysticfm]

I seem to have already lost the included Allen hex key for my Gunfighter mk4 (and I’m kicking myself). I’ve been searching and can’t find anything that tells me what size of Allen tool it needs. I did find that the Gladiators use a 2.5mm tool, but I have one of those here and it seems slightly too small for the hex screws on the GF4, while the next size I have (3mm) is clearly too large. Does anyone know for certain what size is needed?

[fallout9]

Gladiator is 2.5mm; Gunfighter is 3mm, with some 2.5mm inside.

[Delta]

Gladiators use 2 mm, Gunfighters use 2.5 mm according to the Wera screwdrivers I am using for my gear. Definitely metric sizes in half-millimeter increments though, even for the few screws that might have a different drive, unless you decided to get your own screws and somehow managed to find some with metric threads and American drive.