Sons of Guns (2011)

S3E10 The Gun That Killed Osama

A retired Navy SEAL sniper approaches Will with a request to customize a civilian H&K 416 for a charitable cause. Will consents, but only if the sniper assists the Red Jacket team in reconstructing the firearm thought to have been used to eliminate Osama Bin Laden. Additionally, he wants to fast rope from a helicopter and put their hypothesis to the test.