At one time we didn't have a mock up M2 to sight in the remote weapons system, (RWS) which utilizes a heavy barrel M2 Browning. We would have to check out a M2 from the government armory. Our mode of transportation on the depot were golf carts. Two of us would have to go and sign for the weapon, then cruise back to the shop to perform the boresight. Nothing makes a golf cart cooler then having a Ma Deuce leaned un against the seat, in between two guys. Now they use a gutted out shell of a 240C or a carcass of a Browning with nothing more than a charging handle and a barrel. The weapon was there just to hold the bore scope/laser sight to adjust the camera sight to both were zeroed in sink.