I am building a modified Zastava M85 in 5.56. Using a Bulgarian SLR100 series CHF 16 inch barrel vs the Zastava.
Modified gas tube and piston to push the gas block forward.
Deciding whether to stay with the Zastava FSB/GB in 26mm with a PBS5 I cut down and reprofiled a bit..., or use the Bulgarian in 24mm and the fake booster etc.
Fixed stock or underfolder. Pretty sure I'm going underfolder. Thought about sidefolder but not going that way.
I think I will use black Bulgarian Polymer lower and Zastava polymer upper furniture