Anoraks on, chaps. Attached is a photo of a box of 9 mm L7 A1 ammunition made by Hirtenberger. This stuff is hot! It does about 1345 fps out of a glock, and has a 124 grain bullet. Is it British issue? Is L7 A1 the "new" designation for Mk.2z? is it something different? Has anyone seen this stuff in service?