Have you tried the Geissele charging handle yet? I just got one, put it on my PDW Diablo SBR, going to put it through its paces.
MVB Industries PDW Stock | Geissele Charging Handle | Trijicon Accupower 1-4x
| Lancer AR15 Magazine | EDC Gen3 G19 FDE
| Lancer AR15 Magazine | EDC Gen3 G19 FDE