Hatcher talks about the Benet-Mercie gun in his notebook. IIRC he was assigned to troubleshooting duties because of numerous malfunctions in the field, almost all of which were being caused by actions of the GIs due to improper training.
At one time Clarke Brothers gunshop in Virginia had one of these guns hanging on the wall.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.