I have both the LDR and the Longbow Synth. I recommend builds with ambush scopes, performance bonus, field scout or perfect balance. LDR grabs more ammo from special ammo crates. If you want an archetype like the LDR and the longbow, then get her benevolence and reforge. This archetype is the one with the fastest fire rate that can still one hit kill a shielded guardian with a headshot. So if all else fails, pick that one up. Happy hunting! Jubs