m4 airsoft charging handle upgrade

thingiverse

Replace your factory-issued charging handle with a sleek, custom-made variant reminiscent of the legendary "Call of Duty" Type One model. When working with high-quality thermoplastics like ABS, aim to reach a suggested end temperature of at least 190°F to ensure optimal performance. Prior to printing, ensure that your print plate has reached a comfortable operating temperature of approximately 90°F. Don't skimp on the infill; opt for a minimum of 80% to achieve robust results. Consider incorporating support structures as well to enhance overall stability and durability.