Good Morning Folks, For what it's worth, here's the information I have relating to the U.S. Military [ U.S. Navy ] adopted Glock Pistol designations. They are as follows;
GLOCK G-19 - 9MM = MK-27 GEN. 4 / NSN 1005-01-658-7261
Note that the above Nomenclature is from 09-16-2016, according to the Document I have.
Each Pistol was provided with the following, & at the cost of $405.00 each unit;
'M.O.S.' System installed, Standard 5.5 Lb Trigger Spring, Threaded Barrel, 6x 15 Rd Magazines, along with the usual Magazine Loader, Cleaning Rod, Bore Brush, & Plastic Case.
I am sure that I have observed other, related Documents pertaining to U.S. Military purchases of similar Glocks, although of different Models, namely G26 / 9MM & G27 / .40 S&W along with orders for possibly other Models or Calibers, depending upon their needs at the time. [ I do have those Documents around here somewhere, & hopefully I could turn them up, if anyone's really interested ? ] I'm sure a few others here also have such Documentation, & hopefully they'll chip in ? In a 'nutshell', the method in which our Military managed to procure the Glocks, even though they had been previously denied them due to our already having an 'issue' 9mm Service Pistol was / is quite original. From what I've been advised, [ And if I'm wrong, please correct me ? ] was that SOCOM had to request a smaller, hence more concealable Handgun for use on missions requiring them to not appear armed.
That of course could pertain to many potential operations. After 'making the case' for exactly what the G19 is, & does [ Reliable, Accurate, High Capacity, More Concealable, etc. ] they submitted the requirement. Needless to say, they did fortunately end up with the requested Glock 19, along with a few others which I feel is a win for everyone. So, thankfully the Beretta M92FS / M9 Pistol had a large format, which in this particular case really worked in our favor ! OK, I'm done. Sorry for carrying on perhaps too much, too long, but I thought a few here might be interested in how our SOCOM ended up with their Glock 19's. THANKS
Best, Dom P.