Breda's MGs were completely unreliable, they could jam very easily and without pulling -/+ G's .. they were built like s**t... I heard that Yak's 37mm couldn have been fired more than 2 / 3 rounds per time, the overheating could have led to a "gun barrel failure" (forgive my awful english).. And I'm not a chief in weapons, indeed I dont know anything about them.
But I would be more interested in engines' realism. Most of them used to overheat at 100% throttle and then experienced failures. WEP was very dangerous if engaged.. (oh and the wep engagement, isnt it too much arcade-style?). I would also add something about "our" engines reliabilty: they are perfect! I suggest some kind of randomized engine "failure" or "performance decrease" based on a statistic calculus about how much time you fly, not in a single plane (may be for long range bombers in mission tho) but for the whole time u're playing AH. We already have that!
I know most of the Gamers wouldnt like this, it's a provocation.
just some of my intricated thoughts. Throw me tomatoes but not rocks pls 
<S>
chewi
Yep, You are right.... There should be a random "reliability factor" in the game..
Some of the equipment used and loved in this game, wasn't so neat and tidy in reality..
Engines breakdown, get oil leaks, loose oil pressure.. Even NEW ones do... When life
and death are the stakes, the pilots would run them to the ragged edge for power...
And especially units that have seen many hours of use in combat, reliability suffers!!!
LOL, and a single engine fighter that shuts his engine down in combat, LOLOLOL!!!
Runnin with mixture leaned out, Mags at full advance, stuffer at max overdrive,
and he just shuts down his engine.... Over enemy territory, with the sky full
of badguys, tryin to kill him......Yeah RIGHT!!! Even if the plane was equipped
with a self starting feature.. With the engine running at the ragged edge for power,
the chances of a restart, would be EXTREMELY unlikely...
LOL, worse than that.. Many of the fighters in this game, had no electric starters
ANYWAY!!! Batteries and big honkin electric motors just weigh too much... So
they used a handcrank or blackpowder cartridge to spin the inertia starter...
I suppose they have a handy mechanic to stand on the wing and crank that
starter while pullin Neg G, right? LOL!!!
But this game has a MIRACLE START BUTTON... Works EVERY TIME!!! LOL..
Gotta be the GAMIEST thing in the game!!!
I know, I know, lighten up, its just a game.. LOL!!!
Whatever, doesn't matter... Just pointing out a pertinent fact...
RC