For all you LSA lovers out there, here's a source:
http://www.sarcoinc.com/new60.html
This stuff was made in 1995, by Castrol, of Germany. There are several companies that still make LSA for the military, such as Castrol, Royal Lubricants, Chemsol, Mil Spec Products, etc., but they will only sell it in bulk.
Here's the tech sheet on LSA from ROYCO:
ROYCO 46 is a light tan colored synthetic based semi-fluid grease with a lithium stearate thickener.
ROYCO 46 is intended for use in automatic weapons systems and accessory equipment operating in severe environments and conditions where thin film and extreme pressure lubrication are encountered.
ROYCO 46 is recommended for the lubrication of the M16, M39, M61, and other weapons systems where high cyclic rates of fire are encountered.
ROYCO 46 is suitable for use in temperatures ranging from -65F to +260F.
ROYCO 46 meets all requirements and is qualified against MIL-L-46000(LSA).