2 questions: Trigger spring and Hold open issue

[Sky Zero]

Thanks GT and 4 scale! might be a silly question because I'm still new, but would it be fine to try my byf upper on my '18 dwm lower? I'll see if I can narrow down the issue. the main spring is complete greek to me

[DonVoigt]

Originally Posted by Sky Zero

Thanks GT and 4 scale! might be a silly question because I'm still new, but would it be fine to try my byf upper on my '18 dwm lower? I'll see if I can narrow down the issue. the main spring is complete greek to me

ABsolutely!
As long as they slide together easily; sometimes tolerances go against you and they won't fit.