A&K Magpul Masada / ACR Bolt Carrier (airsoft)

thingiverse

The first part to break on my Masada was the bolt carrier/block. It's the central component that keeps everything connected, riding snugly inside the bolt cover along the bolt guide/rod, propelled forward by a spring and locked in place by a metal handle. I created a 3D printable version of this crucial piece using precise measurements from my broken original, with some minor tweaks to enhance durability and printability. If you spot any flaws, please let me know so I can update the design. Two versions are in the works: one packed with reinforcing material for added strength, and another with a bit more play for those printing with high-strength materials that don't require as much extra support. Update 6/29/15 Use the non-sanded version! After modeling, I found it was slightly off, making it difficult to fit the rod in the middle. I'll reprint this one to test its accuracy but for now, use the latest design as a reference.