Minimalist Carbine Buttstock (MCB) by FFFTech/FFFTechnology A buttstock designed to be compact and lightweight; while providing a similar length of pull as the Magpul MOE® Fixed Carbine Stock. Included sling loops for 1 1/4" slings. A drain slot is included in the design should water enter the hollow portion of the stock. This buttstock is designed for Milspec Carbine Buffer Tubes only. Printer Used: Monoprice Maker Select Plus Filament Used: PLA+ Print Settings: Extruder: 204C Bed: 54C First Layer Print Height: .24mm Standard Layer Height: .20mm Wall Thickness: .40 Wall Perimeters: 4 Infill: 32% Infill Pattern: Gyroid Material Flow: 101% Support Percentage: 12% (Supports only needed for the set screw hole) Hardware Needed: 1x M8x8 Hex Socketed Set Screw Installation (Do I really need to explain this...) 1) Press the hollow socket of the buttstock on the end of the carbine buffer tube. 2) After making sure the set screw hole is lined up with the end of the adjustable stock channel, thread the set screw into the stock. Use purple Locktite on the set screw if you're worried about the screw backing out. WARNING: This stock is designed for "normal" shooting usage. Any repeated high impacts on: Stones, Bricks, Dense Fucking Skulls, The Great Wall of China, and Lead Lined, Steel Reinforced, Nuclear Bunker Vault Doors, will eventually lead to structural failure of the 3D printed buttstock. Should this occur, print another... cuz let's be realistic; who's gonna stop you?