The Glock is a very good pistolé however.
Had a 23, 26, and a 34 and sold all of them - horrible ergonomics, but very affordable for mass purchasers like the military and dead nuts reliable I'll grant you.
I'd be surprised if they were being issued with Glocks though, ADs are a big problem with the Safe Action especially carrying it on the body while wriggling in and out of cockpits, although saying that in certain quarters would likely get me perforated.
Interestingly the RAF Regiment seems to think that the Glock 17 is a pintle mounted machine gun (judging by the accompanying photo) with an effective range of 25m and a "maximum range" of 50m.
The RAF Regiment - Glock 17 Pistol