Aeroshell 33 MS Grease Kit - 10cc Syringe (Specifically Sized for Gun Owners and Builders) , Best Gun Grease. MIL-G-21164D Aeroshell 33 MS grease in a hard to find size. Mil-Spec grease in easy to use 10cc Syringe for use with guns and other smaller applications. 10cc Curved tip syringe for optimal application. MIL-G-21164D