The Cuomo Mag

The Cuomo Mag is a 3D printed AR-15 magazine named after the Governor of New York, Andrew Cuomo, who signed the NY SAFE Act into law banning magazines capable of holding more than 10 rounds of ammunition. It was created by Defense Distributed and made public around January 2013

The initial prototype was created using the Objet Connex26 using VeroClear printing material (a transparent material) in order to show the magazine’s round count and feeding action via the Fused deposition modeling (FDM) method.

The magazine holds 30 rounds and was able to handle enough stress to fire 227+ bullets while swapping out the barrels on the rifle to keep them cool. In a test at a gun range near Austin, Texas, Defense Distributed fired a total of 342 rounds using the magazine with no issues.

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