AC ACE Grease Gun
The grease gun in an AC ACE was a Tecalemite number GB2801 with a crimped end. The crimped end you can see below appears to be the version used for the Early ACA ACE. the non crimped was for later AC ACE and Cobra. They came in a couple of different blue colours - "metallic" blue while others are "hammer tone" blue.
Below you can see an original AC ACE with a non - original grease gun.You'll notice it's not crimped! Probably the Tecalemite GB 2800. The guns are all very similar with only small differences separating them on the 2800 and the 2801. Grease guns is a much discussed object on Cobra and AC forums.