Printable AR-15 Case Deflector Designed for use on T-91 uppers, should work fine on anything with a pic rail. Some fitment may been needed for things that aren't a T-91 upper. Printed Parts Checklist: Deflector Body Deflector Clamp Hardware Checklist: Refer to the "Shopping List" section of the build tutorial pdf. General Print Settings: My print settings for PLA+ were as follows: Walls: 8 (Very important to set walls to 8 - you should be able to go higher, but going lower will signifcantly weaken the flanges that mate the receiver sections) Nozzle: 0.4mm Layer Height: 0.15mm Temp: 230/60C Infill: 100% Supports: On/full (tree supports are ok) Cooling fan: 20% normal, 50% on bridges. Or whatever works for you. It's a simple part. Bed Adhesion: gluestick or hairspray - since the big sections of this print have small footprints on the bed, using plenty of gluestick or hairspray is recommended. All other settings can/should be left as default or whatever you know works best with your printing setup.