Nerf gun

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Contents

Executive Summary

Product Study

Functionality

Big Bad Bow

Rapid Fire 20

Buzz Saw

User Study

Big Bad Bow

Rapid Fire 20

Buzz Saw

Performance Study

Big Bad Bow

Rapid Fire 20

Buzz Saw

Product Dissection

Mechanical Function

Bill of Materials

Big Bad Bow

Part No. Name Function Quantity Material Mass Manufacturing Process Picture
101 Bow Arm and Outer Cog Cosmetic 2 Plastic 56g Injection Molded
102 Small Inner Cog Cosmetic 2 Plastic 5g Injection Molded
201 Front Left Cover Priming Mechanism Housing 1 Plastic 117g Injection Molded
202 Front Right Cover Priming Mechanism Housing 1 Plastic 118g Injection Molded
203 Rear Right Cover Barrel/Action Housing 1 Plastic 123g Injection Molded
204 Front Left Cover Barrel/Action Housing 1 Plastic 119g Injection Molded
301 Nozzle Air Delivery/Dart Delivery 1 Plastic 17g Injection Molded
302 Nozzle Tip Air Restriction/FOD Protection 1 Plastic <1g Injection Molded
303 White Tip Holder Holds Nozzle Tip 1 Plastic 3g Injection Molded
304 White Air Restrictor + Spring Air Restriction 1 Plastic/Steel 3g Injection Molded
305 Rubber Piston Air Delivery 1 Latex Rubber 5g Injection Molded
306 Barrel Lock Action Lock 2 Plastic 2g Injection Molded
307 Piston Shaft Air Delivery 1 Plastic 26g Injection Molded
308 Trigger Lock Action Release 1 Plastic 2g Injection Molded
309 Trigger Action Release 1 Plastic 8g Injection Molded
310 Spring Stop Piston-Cylinder Spring Compression 1 Plastic 1g Injection Molded
311 Cylinder Air Delivery 1 Plastic 26g Injection Molded
401 Eyepiece Cosmetic 1 Plastic 4g Injection Molded
402 Eyepiece Lens Cosmetic/Aiming 1 Acrylic <1g Die Cut
501 Arrow Dart Ammo 3 Styrofoam 5g Molded/Glued
901 Screw Fastener 18 Steel 0.5g Forged/Machined
902 Spring for Barrel Lock Action Spring 2 Steel <.5g Rolled/Bent
903 Short Trigger Spring Release Mechanism 1 Steel <1g Rolled/Bent
904 Long Trigger Spring Release Mechanism 1 Steel <1g Rolled/Bent
905 Piston Spring Air Delivery 1 Steel 12g Rolled/Bent

Preliminary Analysis

DFMA

FMEA

DFE

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