Three Sling holder Options
Leather sling holder
The standard leather sling holder. It has holes on the sling holder for adjustment. Adjustable both lengthwise and sideways.

Synthetic sling holder
Same as the leather one but the material is a black synthetic material.
Standard Sling holder
The same sling holder as the STANDARD. Only adjustable lengthwise, but it is sturdier than the other sling holders as it has less moving parts.