And while a lot of the stuff sent isn't new, it is still within its service life period so it works just the same.
From a report I saw at the weekend, where a BBC reporter (and her cameraman[1]) was in a front-line area, they at one point had a stint with a mortar team tasked with a couple of shots (probably wasn't going to be much more than that, originally) at some target. Whoomp, the first shot, then Wh...Fizzle on the second. A clear "misfire" was called, then it seems that the projectile was up at the top end of the mortar-tube, half-breached and rattling around like some sort of (decidedly unsafe!) safety-valve, seemingly enough rate of propellant burning to lift it up to the point where it could exhaust its gases, but not enough to actually get it out of the barrel at all. (Which, given the possibilities if it had actually managed to creep out the barrel and barely flop onto the ground, presumably the warhead charge still at full capacity... seems like a better thing to happen.)
Or so my interpretation of the brief clip was, as everyone being filmed rapidly moved away from the 'bubbling' weapon[3]. The reporter, as voice-over, explained that they're getting a lot of duds/failures... Though I don't know how much of that might be because "a lot of failures" divided by "a honkingly huge number of firings" is still within the expected range for use, rather than there being an increased failure rate due to 'weapon senility', or mishandling, in all its various possible forms. It's a chance anecdote/complaint, given alongside an instance that just happened to be recorded (and broadcast) for posterity.
This is just what was conveyed to the UK news environment, and flashed by in such a short instant, but the moment of drama stuck in my head and I thought I'd quickly relate it as relevent. (I'm sure it's rewatchable, somehow, for better context than my own recollection alone. Not sure where you'd find it. And not gonna try to narrow it down myself, right now.)
[1] I've noticed that they namecheck their camerapersons, the BBC, even when it's a radio report. I don't know when it has started, but it's good that as well as the 'face', that is their war-reporter, they give credit to the almost never seen[2] partner who nonetheless takes as much risk as a noncombatant in the combat arena.
[2] Occasionally a handheld device sequence shot by the reporter, spliced in.
[3] Still being filmed, by the steady-handed cameraman! At least until the shot itself was cut away from, in editing, to (I think it was) a bit of a follow-up with one or two of the front-line liasons/escorts (gathered, with reporters, under a handy bit of farmyard/backyard roofing) now worrying about a Russian drone, and the report and sound of a jet in the vicinity. I imagine[4] the mortar crew themselves were by then busy going through the FIA to make 'safe' their equipment, as quickly and as soon as they could given the risk of both their own little problem and counter-battery/etc.
[4] Obviously I don't know anything that wasn't explicitly reported, how much time had passed, perhaps even if there were anachronistic splices involved in the editing of the piece. But such things as were seen happened, and presumably other things happened off-camera (or were censored out of the report for one good reason or other).